diff --git a/src/web/app/common/tags/authorized-apps.tag b/src/web/app/common/tags/authorized-apps.tag
index 918e8b956c..14795e49da 100644
--- a/src/web/app/common/tags/authorized-apps.tag
+++ b/src/web/app/common/tags/authorized-apps.tag
@@ -19,16 +19,15 @@
 	<script>
 		this.mixin('api');
 
-		this.apps = []
-		this.fetching = true
+		this.apps = [];
+		this.fetching = true;
 
 		this.on('mount', () => {
-			this.api 'i/authorized_apps' 
-			.then (apps) =>
-				this.apps = apps
-				this.fetching = false
+			this.api('i/authorized_apps').then(apps => {
+				this.apps = apps;
+				this.fetching = false;
 				this.update();
-			.catch (err) =>
-				console.error err
+			});
+		});
 	</script>
 </mk-authorized-apps>
diff --git a/src/web/app/common/tags/copyright.tag b/src/web/app/common/tags/copyright.tag
index 368c4e3196..9c3f1f648b 100644
--- a/src/web/app/common/tags/copyright.tag
+++ b/src/web/app/common/tags/copyright.tag
@@ -1,11 +1,7 @@
-<mk-copyright><span>(c) syuilo 2014-2017</span>
+<mk-copyright>
+	<span>(c) syuilo 2014-2017</span>
 	<style>
 		:scope
 			display block
-
-			
-
-			
-
 	</style>
 </mk-copyright>
diff --git a/src/web/app/common/tags/core-error.tag b/src/web/app/common/tags/core-error.tag
index 07f41e403c..b424c8abb7 100644
--- a/src/web/app/common/tags/core-error.tag
+++ b/src/web/app/common/tags/core-error.tag
@@ -59,6 +59,7 @@
 	<script>
 		retry() {
 			this.unmount();
-			this.opts.retry!
+			this.opts.retry();
+		}
 	</script>
 </mk-core-error>
diff --git a/src/web/app/common/tags/ellipsis.tag b/src/web/app/common/tags/ellipsis.tag
index 58f1083954..97ef745d02 100644
--- a/src/web/app/common/tags/ellipsis.tag
+++ b/src/web/app/common/tags/ellipsis.tag
@@ -20,10 +20,5 @@
 					opacity 1
 				40%
 					opacity 0
-
-			
-
-			
-
 	</style>
 </mk-ellipsis>
diff --git a/src/web/app/common/tags/introduction.tag b/src/web/app/common/tags/introduction.tag
index 24fe86e997..fda011efff 100644
--- a/src/web/app/common/tags/introduction.tag
+++ b/src/web/app/common/tags/introduction.tag
@@ -21,9 +21,5 @@
 					margin 0
 					text-align center
 
-			
-
-			
-
 	</style>
 </mk-introduction>
diff --git a/src/web/app/common/tags/messaging/index.tag b/src/web/app/common/tags/messaging/index.tag
index d49596c870..e9a031a2bd 100644
--- a/src/web/app/common/tags/messaging/index.tag
+++ b/src/web/app/common/tags/messaging/index.tag
@@ -327,29 +327,29 @@
 			key = e.which
 			switch (key)
 				| 9, 40 => // Key[TAB] or Key[↓]
-					e.prevent-default!
-					e.stop-propagation!
-					this.refs.search-result.child-nodes[0].focus();
+					e.preventDefault();
+					e.stopPropagation();
+					this.refs.search-result.childNodes[0].focus();
 
 		on-search-result-keydown(i, e) {
 			key = e.which
 			switch (key)
 				| 10, 13 => // Key[ENTER]
-					e.prevent-default!
-					e.stop-propagation!
+					e.preventDefault();
+					e.stopPropagation();
 					@search-result[i]._click!
 				| 27 => // Key[ESC]
-					e.prevent-default!
-					e.stop-propagation!
+					e.preventDefault();
+					e.stopPropagation();
 					this.refs.search.focus();
 				| 38 => // Key[↑]
-					e.prevent-default!
-					e.stop-propagation!
-					(this.refs.search-result.child-nodes[i].previous-element-sibling || this.refs.search-result.child-nodes[@search-result.length - 1]).focus();
+					e.preventDefault();
+					e.stopPropagation();
+					(this.refs.search-result.childNodes[i].previous-element-sibling || this.refs.search-result.childNodes[@search-result.length - 1]).focus();
 				| 9, 40 => // Key[TAB] or Key[↓]
-					e.prevent-default!
-					e.stop-propagation!
-					(this.refs.search-result.child-nodes[i].next-element-sibling || this.refs.search-result.child-nodes[0]).focus();
+					e.preventDefault();
+					e.stopPropagation();
+					(this.refs.search-result.childNodes[i].next-element-sibling || this.refs.search-result.childNodes[0]).focus();
 
 	</script>
 </mk-messaging>
diff --git a/src/web/app/common/tags/messaging/room.tag b/src/web/app/common/tags/messaging/room.tag
index 320af8a8b4..a402585693 100644
--- a/src/web/app/common/tags/messaging/room.tag
+++ b/src/web/app/common/tags/messaging/room.tag
@@ -203,13 +203,13 @@
 			n.inner-HTML = '<i class="fa fa-arrow-circle-down"></i>' + message
 			n.onclick = =>
 				@scroll-to-bottom!
-				n.parent-node.remove-child n
+				n.parentNode.removeChild n
 			this.refs.notifications.appendChild n
 
 			setTimeout =>
 				n.style.opacity = 0
 				setTimeout =>
-					n.parent-node.remove-child n
+					n.parentNode.removeChild n
 				, 1000ms
 			, 4000ms
 
diff --git a/src/web/app/common/tags/number.tag b/src/web/app/common/tags/number.tag
index 626b184fce..212a80b736 100644
--- a/src/web/app/common/tags/number.tag
+++ b/src/web/app/common/tags/number.tag
@@ -6,13 +6,14 @@
 	</style>
 	<script>
 		this.on('mount', () => {
-			// バグ？ https://github.com/riot/riot/issues/2103
-			#value = this.opts.value
-			value = this.opts.riot-value
-			max = this.opts.max
+			// https://github.com/riot/riot/issues/2103
+			//value = this.opts.value
+			const value = this.opts.riotValue;
+			const max = this.opts.max;
 
-			if max? then if value > max then value = max
+			if (max != null && value > max) value = max;
 
-			this.root.innerHTML = value.to-locale-string!
+			this.root.innerHTML = value.toLocaleString();
+		});
 	</script>
 </mk-number>
diff --git a/src/web/app/common/tags/poll-editor.tag b/src/web/app/common/tags/poll-editor.tag
index 46975bbe23..e35d8e1369 100644
--- a/src/web/app/common/tags/poll-editor.tag
+++ b/src/web/app/common/tags/poll-editor.tag
@@ -86,26 +86,31 @@
 
 	</style>
 	<script>
-		this.choices = ['', '']
+		this.choices = ['', ''];
 
 		oninput(i, e) {
-			@choices[i] = e.target.value
+			this.choices[i] = e.target.value;
+		}
 
 		add() {
-			@choices.push ''
+			this.choices.push('');
 			this.update();
-			this.refs.choices.child-nodes[@choices.length - 1].child-nodes[0].focus();
+			this.refs.choices.childNodes[this.choices.length - 1].childNodes[0].focus();
+		}
 
 		remove(i) {
-			this.choices = @choices.filter((_, _i) -> _i != i)
+			this.choices = this.choices.filter((_, _i) => _i != i);
 			this.update();
+		}
 
 		destroy() {
-			this.opts.ondestroy!
+			this.opts.ondestroy();
+		}
 
 		get() {
 			return {
-				choices: @choices.filter (choice) -> choice != ''
+				choices: this.choices.filter(choice => choice != '')
 			}
+		}
 	</script>
 </mk-poll-editor>
diff --git a/src/web/app/common/tags/poll.tag b/src/web/app/common/tags/poll.tag
index d0ee1fad7d..c9209c3a3b 100644
--- a/src/web/app/common/tags/poll.tag
+++ b/src/web/app/common/tags/poll.tag
@@ -70,30 +70,35 @@
 	<script>
 		this.mixin('api');
 
-		this.post = this.opts.post
-		this.poll = @post.poll
-		this.total = @poll.choices.reduce ((a, b) -> a + b.votes), 0
-		this.is-voted = @poll.choices.some (c) -> c.is_voted
-		this.result = @is-voted
+		this.post = this.opts.post;
+		this.poll = this.post.poll;
+		this.total = this.poll.choices.reduce((a, b) => a + b.votes, 0);
+		this.isVoted = this.poll.choices.some(c => c.is_voted);
+		this.result = this.isVoted;
 
-		toggle-result() {
-			this.result = !@result
+		toggleResult() {
+			this.result = !this.result;
+		}
 
 		vote(id) {
-			if (@poll.choices.some (c) -> c.is_voted) then return
-			this.api 'posts/polls/vote' do
-				post_id: @post.id
+			if (this.poll.choices.some(c => c.is_voted)) return;
+			this.api('posts/polls/vote', {
+				post_id: this.post.id,
 				choice: id
-			.then =>
-				@poll.choices.for-each (c) ->
-					if c.id == id
-						c.votes++
-						c.is_voted = true
-				@update do
-					poll: @poll
-					is-voted: true
-					result: true
-					total: @total + 1
-
+			}).then(() => {
+				this.poll.choices.forEach(c => {
+					if (c.id == id) {
+						c.votes++;
+						c.is_voted = true;
+					}
+				});
+				this.update({
+					poll: this.poll,
+					isVoted: true,
+					result: true,
+					total: this.total + 1
+				});
+			});
+		}
 	</script>
 </mk-poll>
diff --git a/src/web/app/common/tags/signin-history.tag b/src/web/app/common/tags/signin-history.tag
index 2b8bddd268..4b5c844b7f 100644
--- a/src/web/app/common/tags/signin-history.tag
+++ b/src/web/app/common/tags/signin-history.tag
@@ -51,8 +51,8 @@
 		this.mixin('api');
 		this.mixin('stream');
 
-		this.history = []
-		this.fetching = true
+		this.history = [];
+		this.fetching = true;
 
 		this.on('mount', () => {
 			this.api 'i/signin_history' 
diff --git a/src/web/app/common/tags/signin.tag b/src/web/app/common/tags/signin.tag
index 75fa51afa7..5cb63685fa 100644
--- a/src/web/app/common/tags/signin.tag
+++ b/src/web/app/common/tags/signin.tag
@@ -99,8 +99,8 @@
 	<script>
 		this.mixin('api');
 
-		this.user = null
-		this.signing = false
+		this.user = null;
+		this.signing = false;
 
 		oninput() {
 			this.api 'users/show' do
@@ -111,7 +111,7 @@
 				this.update();
 
 		onsubmit(e) {
-			e.prevent-default!
+			e.preventDefault();
 
 			if this.refs.username.value == ''
 				this.refs.username.focus();
diff --git a/src/web/app/common/tags/signup.tag b/src/web/app/common/tags/signup.tag
index 86c4bb5e14..55b1b76138 100644
--- a/src/web/app/common/tags/signup.tag
+++ b/src/web/app/common/tags/signup.tag
@@ -177,24 +177,27 @@
 		this.mixin('api');
 		this.mixin('get-password-strength');
 
-		this.username-state = null
-		this.password-strength = ''
-		this.password-retype-state = null
-		this.recaptchaed = false
+		this.usernameState = null;
+		this.passwordStrength = '';
+		this.passwordRetypeState = null;
+		this.recaptchaed = false;
 
-		window.on-recaptchaed = =>
-			this.recaptchaed = true
+		window.onEecaptchaed = () => {
+			this.recaptchaed = true;
 			this.update();
+		}
 
-		window.on-recaptcha-expired = =>
-			this.recaptchaed = false
+		window.onRecaptchaExpired = () => {
+			this.recaptchaed = false;
 			this.update();
+		}
 
 		this.on('mount', () => {
-			head = (document.get-elements-by-tag-name 'head).0' 
+			const head = (document.getElementsByTagName('head'))[0];
 			script = document.createElement 'script' 
-				..set-attribute 'src' \https://www.google.com/recaptcha/api.js
+				..setAttribute 'src' \https://www.google.com/recaptcha/api.js
 			head.appendChild script
+		});
 
 		on-change-username() {
 			username = this.refs.username.value
@@ -263,7 +266,7 @@
 				this.password-retype-state = 'not-match' 
 
 		onsubmit(e) {
-			e.prevent-default!
+			e.preventDefault();
 
 			username = this.refs.username.value
 			password = this.refs.password.value
@@ -286,7 +289,7 @@
 				grecaptcha.reset!
 				this.recaptchaed = false
 
-				locker.parent-node.remove-child locker
+				locker.parentNode.removeChild locker
 
 			false
 	</script>
diff --git a/src/web/app/common/tags/special-message.tag b/src/web/app/common/tags/special-message.tag
index 8304f87ec1..41bd5fe32a 100644
--- a/src/web/app/common/tags/special-message.tag
+++ b/src/web/app/common/tags/special-message.tag
@@ -20,8 +20,8 @@
 
 	</style>
 	<script>
-		now = new Date!
-		this.d = now.get-date!
-		this.m = now.get-month! + 1
+		const now = new Date();
+		this.d = now.getDate();
+		this.m = now.getMonth() + 1;
 	</script>
 </mk-special-message>
diff --git a/src/web/app/common/tags/url-preview.tag b/src/web/app/common/tags/url-preview.tag
index 74f952016e..6daed4dbdf 100644
--- a/src/web/app/common/tags/url-preview.tag
+++ b/src/web/app/common/tags/url-preview.tag
@@ -93,20 +93,22 @@
 	<script>
 		this.mixin('api');
 
-		this.url = this.opts.url
-		this.loading = true
+		this.url = this.opts.url;
+		this.loading = true;
 
 		this.on('mount', () => {
-			fetch CONFIG.url + '/api:url?url=' + @url
-			.then (res) =>
-				info <~ res.json!.then
-				this.title = info.title
-				this.description = info.description
-				this.thumbnail = info.thumbnail
-				this.icon = info.icon
-				this.sitename = info.sitename
+			fetch(CONFIG.url + '/api:url?url=' + this.url).then(res => {
+				res.json().then(info => {
+					this.title = info.title;
+					this.description = info.description;
+					this.thumbnail = info.thumbnail;
+					this.icon = info.icon;
+					this.sitename = info.sitename;
 
-				this.loading = false
-				this.update();
+					this.loading = false;
+					this.update();
+				});
+			});
+		});
 	</script>
 </mk-url-preview>
diff --git a/src/web/app/common/tags/url.tag b/src/web/app/common/tags/url.tag
index 596d2914c9..0ad9e72b5d 100644
--- a/src/web/app/common/tags/url.tag
+++ b/src/web/app/common/tags/url.tag
@@ -30,19 +30,20 @@
 
 	</style>
 	<script>
-		this.url = this.opts.href
+		this.url = this.opts.href;
 
 		this.on('before-mount', () => {
-			parser = document.createElement 'a' 
-			parser.href = @url
+			parser = document.createElement('a'); 
+			parser.href = this.url;
 
-			this.schema = parser.protocol
-			this.hostname = parser.hostname
-			this.port = parser.port
-			this.pathname = parser.pathname
-			this.query = parser.search
-			this.hash = parser.hash
+			this.schema = parser.protocol;
+			this.hostname = parser.hostname;
+			this.port = parser.port;
+			this.pathname = parser.pathname;
+			this.query = parser.search;
+			this.hash = parser.hash;
 
 			this.update();
+		});
 	</script>
 </mk-url>
diff --git a/src/web/app/desktop/tags/autocomplete-suggestion.tag b/src/web/app/desktop/tags/autocomplete-suggestion.tag
index 073352b19f..cf735255bb 100644
--- a/src/web/app/desktop/tags/autocomplete-suggestion.tag
+++ b/src/web/app/desktop/tags/autocomplete-suggestion.tag
@@ -124,25 +124,25 @@
 			switch (key)
 				| 10, 13 => // Key[ENTER]
 					if @select != -1
-						e.prevent-default!
-						e.stop-propagation!
+						e.preventDefault();
+						e.stopPropagation();
 						@complete @users[@select]
 					else
 						@close!
 				| 27 => // Key[ESC]
-					e.prevent-default!
-					e.stop-propagation!
+					e.preventDefault();
+					e.stopPropagation();
 					@close!
 				| 38 => // Key[↑]
 					if @select != -1
-						e.prevent-default!
-						e.stop-propagation!
+						e.preventDefault();
+						e.stopPropagation();
 						@select-prev!
 					else
 						@close!
 				| 9, 40 => // Key[TAB] or Key[↓]
-					e.prevent-default!
-					e.stop-propagation!
+					e.preventDefault();
+					e.stopPropagation();
 					@select-next!
 				| _ =>
 					@close!
@@ -167,7 +167,7 @@
 			this.refs.users.children.for-each (el) =>
 				el.remove-attribute 'data-selected' 
 
-			this.refs.users.children[@select].set-attribute 'data-selected' \true
+			this.refs.users.children[@select].setAttribute 'data-selected' \true
 			this.refs.users.children[@select].focus();
 
 		complete(user) {
@@ -177,11 +177,11 @@
 			this.opts.close!
 
 		function contains(parent, child)
-			node = child.parent-node
+			node = child.parentNode
 			while node?
 				if node == parent
 					return true
-				node = node.parent-node
+				node = node.parentNode
 			return false
 	</script>
 </mk-autocomplete-suggestion>
diff --git a/src/web/app/desktop/tags/contextmenu.tag b/src/web/app/desktop/tags/contextmenu.tag
index 114d48cf37..0d8cb313ac 100644
--- a/src/web/app/desktop/tags/contextmenu.tag
+++ b/src/web/app/desktop/tags/contextmenu.tag
@@ -95,10 +95,10 @@
 	</style>
 	<script>
 		this.root.add-event-listener 'contextmenu' (e) =>
-			e.prevent-default!
+			e.preventDefault();
 
 		mousedown(e) {
-			e.prevent-default!
+			e.preventDefault();
 			if (!contains this.root, e.target) and (this.root != e.target)
 				@close!
 			return false
@@ -129,11 +129,11 @@
 			this.unmount();
 
 		function contains(parent, child)
-			node = child.parent-node
+			node = child.parentNode
 			while (node != null)
 				if (node == parent)
 					return true
-				node = node.parent-node
+				node = node.parentNode
 			return false
 	</script>
 </mk-contextmenu>
diff --git a/src/web/app/desktop/tags/donation.tag b/src/web/app/desktop/tags/donation.tag
index b01c0a44df..9ce2ed819f 100644
--- a/src/web/app/desktop/tags/donation.tag
+++ b/src/web/app/desktop/tags/donation.tag
@@ -51,8 +51,8 @@
 		this.mixin('i');
 
 		close(e) {
-			e.prevent-default!
-			e.stop-propagation!
+			e.preventDefault();
+			e.stopPropagation();
 
 			this.I.data.no_donation = true
 			this.I.update!
diff --git a/src/web/app/desktop/tags/drive/base-contextmenu.tag b/src/web/app/desktop/tags/drive/base-contextmenu.tag
index 39e01558da..7eb5fd3b98 100644
--- a/src/web/app/desktop/tags/drive/base-contextmenu.tag
+++ b/src/web/app/desktop/tags/drive/base-contextmenu.tag
@@ -24,15 +24,15 @@
 			this.refs.ctx.open pos
 
 		create-folder() {
-			@browser.create-folder!
+			this.browser.create-folder!
 			this.refs.ctx.close!
 
 		upload() {
-			@browser.select-local-file!
+			this.browser.select-local-file!
 			this.refs.ctx.close!
 
 		url-upload() {
-			@browser.url-upload!
+			this.browser.url-upload!
 			this.refs.ctx.close!
 	</script>
 </mk-drive-browser-base-contextmenu>
diff --git a/src/web/app/desktop/tags/drive/browser.tag b/src/web/app/desktop/tags/drive/browser.tag
index 02c886d14d..2a93afbb24 100644
--- a/src/web/app/desktop/tags/drive/browser.tag
+++ b/src/web/app/desktop/tags/drive/browser.tag
@@ -293,7 +293,7 @@
 			@add-file file, true
 
 		on-stream-drive-file-updated(file) {
-			current = if @folder? then @folder.id else null
+			current = if this.folder? then this.folder.id else null
 			if current != file.folder_id
 				@remove-file file
 			else
@@ -303,7 +303,7 @@
 			@add-folder folder, true
 
 		on-stream-drive-folder-updated(folder) {
-			current = if @folder? then @folder.id else null
+			current = if this.folder? then this.folder.id else null
 			if current != folder.parent_id
 				@remove-folder folder
 			else
@@ -350,29 +350,29 @@
 			document.document-element.add-event-listener 'mouseup' up
 
 		path-oncontextmenu(e) {
-			e.prevent-default!
+			e.preventDefault();
 			e.stop-immediate-propagation!
 			return false
 
 		ondragover(e) {
-			e.prevent-default!
-			e.stop-propagation!
+			e.preventDefault();
+			e.stopPropagation();
 
 			// ドラッグ元が自分自身の所有するアイテムかどうか
 			if !@is-drag-source
 				// ドラッグされてきたものがファイルだったら
-				if e.data-transfer.effect-allowed == 'all' 
-					e.data-transfer.drop-effect = 'copy' 
+				if e.dataTransfer.effect-allowed == 'all' 
+					e.dataTransfer.dropEffect = 'copy' 
 				else
-					e.data-transfer.drop-effect = 'move' 
+					e.dataTransfer.dropEffect = 'move' 
 				this.draghover = true
 			else
 				// 自分自身にはドロップさせない
-				e.data-transfer.drop-effect = 'none' 
+				e.dataTransfer.dropEffect = 'none' 
 			return false
 
 		ondragenter(e) {
-			e.prevent-default!
+			e.preventDefault();
 			if !@is-drag-source
 				this.draghover = true
 
@@ -380,19 +380,19 @@
 			this.draghover = false
 
 		ondrop(e) {
-			e.prevent-default!
-			e.stop-propagation!
+			e.preventDefault();
+			e.stopPropagation();
 
 			this.draghover = false
 
 			// ドロップされてきたものがファイルだったら
-			if e.data-transfer.files.length > 0
-				Array.prototype.for-each.call e.data-transfer.files, (file) =>
-					@upload file, @folder
+			if e.dataTransfer.files.length > 0
+				Array.prototype.for-each.call e.dataTransfer.files, (file) =>
+					@upload file, this.folder
 				return false
 
 			// データ取得
-			data = e.data-transfer.get-data 'text'
+			data = e.dataTransfer.get-data 'text'
 			if !data?
 				return false
 
@@ -402,12 +402,12 @@
 			// (ドライブの)ファイルだったら
 			if obj.type == 'file' 
 				file = obj.id
-				if (@files.some (f) => f.id == file)
+				if (this.files.some (f) => f.id == file)
 					return false
 				@remove-file file
 				this.api 'drive/files/update' do
 					file_id: file
-					folder_id: if @folder? then @folder.id else null
+					folder_id: if this.folder? then this.folder.id else null
 				.then =>
 					// something
 				.catch (err, text-status) =>
@@ -417,14 +417,14 @@
 			else if obj.type == 'folder' 
 				folder = obj.id
 				// 移動先が自分自身ならreject
-				if @folder? and folder == @folder.id
+				if this.folder? and folder == this.folder.id
 					return false
-				if (@folders.some (f) => f.id == folder)
+				if (this.folders.some (f) => f.id == folder)
 					return false
 				@remove-folder folder
 				this.api 'drive/folders/update' do
 					folder_id: folder
-					parent_id: if @folder? then @folder.id else null
+					parent_id: if this.folder? then this.folder.id else null
 				.then =>
 					// something
 				.catch (err) =>
@@ -439,7 +439,7 @@
 			return false
 
 		oncontextmenu(e) {
-			e.prevent-default!
+			e.preventDefault();
 			e.stop-immediate-propagation!
 
 			ctx = document.body.appendChild document.createElement 'mk-drive-browser-base-contextmenu' 
@@ -464,7 +464,7 @@
 			if url? and url != ''
 				this.api 'drive/files/upload_from_url' do
 					url: url
-					folder_id: if @folder? then @folder.id else undefined
+					folder_id: if this.folder? then this.folder.id else undefined
 
 				@dialog do
 					'<i class="fa fa-check"></i>アップロードをリクエストしました'
@@ -481,7 +481,7 @@
 
 			this.api 'drive/folders/create' do
 				name: name
-				folder_id: if @folder? then @folder.id else undefined
+				folder_id: if this.folder? then this.folder.id else undefined
 			.then (folder) =>
 				@add-folder folder, true
 				this.update();
@@ -492,7 +492,7 @@
 			files = this.refs.file-input.files
 			for i from 0 to files.length - 1
 				file = files.item i
-				@upload file, @folder
+				@upload file, this.folder
 
 		upload(file, folder) {
 			if folder? and typeof folder == 'object' 
@@ -500,7 +500,7 @@
 			this.refs.uploader.upload file, folder
 
 		get-selection() {
-			@files.filter (file) -> file._selected
+			this.files.filter (file) -> file._selected
 
 		new-window(folder-id) {
 			browser = document.body.appendChild document.createElement 'mk-drive-browser-window' 
@@ -538,55 +538,55 @@
 				console.error err
 
 		add-folder(folder, unshift = false) {
-			current = if @folder? then @folder.id else null
+			current = if this.folder? then this.folder.id else null
 			if current != folder.parent_id
 				return
 
-			if (@folders.some (f) => f.id == folder.id)
-				exist = (@folders.map (f) -> f.id).index-of folder.id
-				@folders[exist] = folder
+			if (this.folders.some (f) => f.id == folder.id)
+				exist = (this.folders.map (f) -> f.id).index-of folder.id
+				this.folders[exist] = folder
 				this.update();
 				return
 
 			if unshift
-				@folders.unshift folder
+				this.folders.unshift folder
 			else
-				@folders.push folder
+				this.folders.push folder
 
 			this.update();
 
 		add-file(file, unshift = false) {
-			current = if @folder? then @folder.id else null
+			current = if this.folder? then this.folder.id else null
 			if current != file.folder_id
 				return
 
-			if (@files.some (f) => f.id == file.id)
-				exist = (@files.map (f) -> f.id).index-of file.id
-				@files[exist] = file
+			if (this.files.some (f) => f.id == file.id)
+				exist = (this.files.map (f) -> f.id).index-of file.id
+				this.files[exist] = file
 				this.update();
 				return
 
 			if unshift
-				@files.unshift file
+				this.files.unshift file
 			else
-				@files.push file
+				this.files.push file
 
 			this.update();
 
 		remove-folder(folder) {
 			if typeof folder == 'object' 
 				folder = folder.id
-			this.folders = @folders.filter (f) -> f.id != folder
+			this.folders = this.folders.filter (f) -> f.id != folder
 			this.update();
 
 		remove-file(file) {
 			if typeof file == 'object' 
 				file = file.id
-			this.files = @files.filter (f) -> f.id != file
+			this.files = this.files.filter (f) -> f.id != file
 			this.update();
 
 		go-root() {
-			if @folder != null
+			if this.folder != null
 				this.folder = null
 				this.hierarchy-folders = []
 				this.update();
@@ -608,7 +608,7 @@
 
 			// フォルダ一覧取得
 			this.api 'drive/folders' do
-				folder_id: if @folder? then @folder.id else null
+				folder_id: if this.folder? then this.folder.id else null
 				limit: folders-max + 1
 			.then (folders) =>
 				if folders.length == folders-max + 1
@@ -621,7 +621,7 @@
 
 			// ファイル一覧取得
 			this.api 'drive/files' do
-				folder_id: if @folder? then @folder.id else null
+				folder_id: if this.folder? then this.folder.id else null
 				limit: files-max + 1
 			.then (files) =>
 				if files.length == files-max + 1
@@ -645,11 +645,11 @@
 					flag := true
 
 		function contains(parent, child)
-			node = child.parent-node
+			node = child.parentNode
 			while node?
 				if node == parent
 					return true
-				node = node.parent-node
+				node = node.parentNode
 			return false
 	</script>
 </mk-drive-browser>
diff --git a/src/web/app/desktop/tags/drive/file-contextmenu.tag b/src/web/app/desktop/tags/drive/file-contextmenu.tag
index 5919599bec..06e7085621 100644
--- a/src/web/app/desktop/tags/drive/file-contextmenu.tag
+++ b/src/web/app/desktop/tags/drive/file-contextmenu.tag
@@ -63,10 +63,10 @@
 			name <~ @input-dialog do
 				'ファイル名の変更'
 				'新しいファイル名を入力してください'
-				@file.name
+				this.file.name
 
 			this.api 'drive/files/update' do
-				file_id: @file.id
+				file_id: this.file.id
 				name: name
 			.then =>
 				// something
@@ -81,15 +81,15 @@
 
 		set-avatar() {
 			this.refs.ctx.close!
-			@update-avatar this.I, null, @file
+			@update-avatar this.I, null, this.file
 
 		set-banner() {
 			this.refs.ctx.close!
-			@update-banner this.I, null, @file
+			@update-banner this.I, null, this.file
 
 		set-wallpaper() {
 			this.refs.ctx.close!
-			@update-wallpaper this.I, null, @file
+			@update-wallpaper this.I, null, this.file
 
 		add-app() {
 			@NotImplementedException!
diff --git a/src/web/app/desktop/tags/drive/file.tag b/src/web/app/desktop/tags/drive/file.tag
index e86948aee0..d41c5279fc 100644
--- a/src/web/app/desktop/tags/drive/file.tag
+++ b/src/web/app/desktop/tags/drive/file.tag
@@ -144,43 +144,43 @@
 
 	</style>
 	<script>
-		this.bytes-to-size = require('../../../common/scripts/bytes-to-size.js');
+		this.bytesToSize = require('../../../common/scripts/bytesToSize.js');
 
 		this.mixin('i');
 
 		this.file = this.opts.file
 		this.browser = this.parent
 
-		this.title = @file.name + '\n' + @file.type + ' ' + (@bytes-to-size @file.datasize)
+		this.title = this.file.name + '\n' + this.file.type + ' ' + (@bytesToSize this.file.datasize)
 
 		this.is-contextmenu-showing = false
 
 		onclick() {
-			if @browser.multiple
-				if @file._selected?
-					@file._selected = !@file._selected
+			if this.browser.multiple
+				if this.file._selected?
+					this.file._selected = !this.file._selected
 				else
-					@file._selected = true
-				@browser.trigger 'change-selection' @browser.get-selection!
+					this.file._selected = true
+				this.browser.trigger 'change-selection' this.browser.get-selection!
 			else
-				if @file._selected
-					@browser.trigger 'selected' @file
+				if this.file._selected
+					this.browser.trigger 'selected' this.file
 				else
-					@browser.files.for-each (file) =>
+					this.browser.files.for-each (file) =>
 						file._selected = false
-					@file._selected = true
-					@browser.trigger 'change-selection' @file
+					this.file._selected = true
+					this.browser.trigger 'change-selection' this.file
 
 		oncontextmenu(e) {
-			e.prevent-default!
+			e.preventDefault();
 			e.stop-immediate-propagation!
 
 			this.is-contextmenu-showing = true
 			this.update();
 			ctx = document.body.appendChild document.createElement 'mk-drive-browser-file-contextmenu' 
 			ctx = riot.mount ctx, do
-				browser: @browser
-				file: @file
+				browser: this.browser
+				file: this.file
 			ctx = ctx.0
 			ctx.open do
 				x: e.page-x - window.page-x-offset
@@ -191,19 +191,19 @@
 			return false
 
 		ondragstart(e) {
-			e.data-transfer.effect-allowed = 'move' 
-			e.data-transfer.set-data 'text' JSON.stringify do
+			e.dataTransfer.effect-allowed = 'move' 
+			e.dataTransfer.set-data 'text' JSON.stringify do
 				type: 'file' 
-				id: @file.id
-				file: @file
+				id: this.file.id
+				file: this.file
 			this.is-dragging = true
 
 			// 親ブラウザに対して、ドラッグが開始されたフラグを立てる
 			// (=あなたの子供が、ドラッグを開始しましたよ)
-			@browser.is-drag-source = true
+			this.browser.is-drag-source = true
 
 		ondragend(e) {
 			this.is-dragging = false
-			@browser.is-drag-source = false
+			this.browser.is-drag-source = false
 	</script>
 </mk-drive-browser-file>
diff --git a/src/web/app/desktop/tags/drive/folder-contextmenu.tag b/src/web/app/desktop/tags/drive/folder-contextmenu.tag
index 20cb264e5d..df094d0bc7 100644
--- a/src/web/app/desktop/tags/drive/folder-contextmenu.tag
+++ b/src/web/app/desktop/tags/drive/folder-contextmenu.tag
@@ -32,19 +32,19 @@
 				this.unmount();
 
 		move() {
-			@browser.move @folder.id
+			this.browser.move this.folder.id
 			this.refs.ctx.close!
 
 		new-window() {
-			@browser.new-window @folder.id
+			this.browser.new-window this.folder.id
 			this.refs.ctx.close!
 
 		create-folder() {
-			@browser.create-folder!
+			this.browser.create-folder!
 			this.refs.ctx.close!
 
 		upload() {
-			@browser.select-lcoal-file!
+			this.browser.select-lcoal-file!
 			this.refs.ctx.close!
 
 		rename() {
@@ -53,10 +53,10 @@
 			name <~ @input-dialog do
 				'フォルダ名の変更'
 				'新しいフォルダ名を入力してください'
-				@folder.name
+				this.folder.name
 
 			this.api 'drive/folders/update' do
-				folder_id: @folder.id
+				folder_id: this.folder.id
 				name: name
 			.then =>
 				// something
diff --git a/src/web/app/desktop/tags/drive/folder.tag b/src/web/app/desktop/tags/drive/folder.tag
index e14f70f419..2d58ddefc7 100644
--- a/src/web/app/desktop/tags/drive/folder.tag
+++ b/src/web/app/desktop/tags/drive/folder.tag
@@ -56,13 +56,13 @@
 		this.folder = this.opts.folder
 		this.browser = this.parent
 
-		this.title = @folder.name
+		this.title = this.folder.name
 		this.hover = false
 		this.draghover = false
 		this.is-contextmenu-showing = false
 
 		onclick() {
-			@browser.move @folder
+			this.browser.move this.folder
 
 		onmouseover() {
 			this.hover = true
@@ -71,19 +71,19 @@
 			this.hover = false
 
 		ondragover(e) {
-			e.prevent-default!
-			e.stop-propagation!
+			e.preventDefault();
+			e.stopPropagation();
 
 			// 自分自身がドラッグされていない場合
 			if !@is-dragging
 				// ドラッグされてきたものがファイルだったら
-				if e.data-transfer.effect-allowed == 'all' 
-					e.data-transfer.drop-effect = 'copy' 
+				if e.dataTransfer.effect-allowed == 'all' 
+					e.dataTransfer.dropEffect = 'copy' 
 				else
-					e.data-transfer.drop-effect = 'move' 
+					e.dataTransfer.dropEffect = 'move' 
 			else
 				// 自分自身にはドロップさせない
-				e.data-transfer.drop-effect = 'none' 
+				e.dataTransfer.dropEffect = 'none' 
 			return false
 
 		ondragenter() {
@@ -94,17 +94,17 @@
 			this.draghover = false
 
 		ondrop(e) {
-			e.stop-propagation!
+			e.stopPropagation();
 			this.draghover = false
 
 			// ファイルだったら
-			if e.data-transfer.files.length > 0
-				Array.prototype.for-each.call e.data-transfer.files, (file) =>
-					@browser.upload file, @folder
+			if e.dataTransfer.files.length > 0
+				Array.prototype.for-each.call e.dataTransfer.files, (file) =>
+					this.browser.upload file, this.folder
 				return false
 
 			// データ取得
-			data = e.data-transfer.get-data 'text'
+			data = e.dataTransfer.get-data 'text'
 			if !data?
 				return false
 
@@ -114,10 +114,10 @@
 			// (ドライブの)ファイルだったら
 			if obj.type == 'file' 
 				file = obj.id
-				@browser.remove-file file
+				this.browser.remove-file file
 				this.api 'drive/files/update' do
 					file_id: file
-					folder_id: @folder.id
+					folder_id: this.folder.id
 				.then =>
 					// something
 				.catch (err, text-status) =>
@@ -127,12 +127,12 @@
 			else if obj.type == 'folder' 
 				folder = obj.id
 				// 移動先が自分自身ならreject
-				if folder == @folder.id
+				if folder == this.folder.id
 					return false
-				@browser.remove-folder folder
+				this.browser.remove-folder folder
 				this.api 'drive/folders/update' do
 					folder_id: folder
-					parent_id: @folder.id
+					parent_id: this.folder.id
 				.then =>
 					// something
 				.catch (err) =>
@@ -147,30 +147,30 @@
 			return false
 
 		ondragstart(e) {
-			e.data-transfer.effect-allowed = 'move' 
-			e.data-transfer.set-data 'text' JSON.stringify do
+			e.dataTransfer.effect-allowed = 'move' 
+			e.dataTransfer.set-data 'text' JSON.stringify do
 				type: 'folder' 
-				id: @folder.id
+				id: this.folder.id
 			this.is-dragging = true
 
 			// 親ブラウザに対して、ドラッグが開始されたフラグを立てる
 			// (=あなたの子供が、ドラッグを開始しましたよ)
-			@browser.is-drag-source = true
+			this.browser.is-drag-source = true
 
 		ondragend(e) {
 			this.is-dragging = false
-			@browser.is-drag-source = false
+			this.browser.is-drag-source = false
 
 		oncontextmenu(e) {
-			e.prevent-default!
+			e.preventDefault();
 			e.stop-immediate-propagation!
 
 			this.is-contextmenu-showing = true
 			this.update();
 			ctx = document.body.appendChild document.createElement 'mk-drive-browser-folder-contextmenu' 
 			ctx = riot.mount ctx, do
-				browser: @browser
-				folder: @folder
+				browser: this.browser
+				folder: this.folder
 			ctx = ctx.0
 			ctx.open do
 				x: e.page-x - window.page-x-offset
diff --git a/src/web/app/desktop/tags/drive/nav-folder.tag b/src/web/app/desktop/tags/drive/nav-folder.tag
index afa6287751..8f8f00783a 100644
--- a/src/web/app/desktop/tags/drive/nav-folder.tag
+++ b/src/web/app/desktop/tags/drive/nav-folder.tag
@@ -17,7 +17,7 @@
 		this.hover = false
 
 		onclick() {
-			@browser.move @folder
+			this.browser.move this.folder
 
 		onmouseover() {
 			this.hover = true
@@ -26,39 +26,39 @@
 			this.hover = false
 
 		ondragover(e) {
-			e.prevent-default!
-			e.stop-propagation!
+			e.preventDefault();
+			e.stopPropagation();
 
 			// このフォルダがルートかつカレントディレクトリならドロップ禁止
-			if @folder == null and @browser.folder == null
-				e.data-transfer.drop-effect = 'none' 
+			if this.folder == null and this.browser.folder == null
+				e.dataTransfer.dropEffect = 'none' 
 			// ドラッグされてきたものがファイルだったら
-			else if e.data-transfer.effect-allowed == 'all' 
-				e.data-transfer.drop-effect = 'copy' 
+			else if e.dataTransfer.effect-allowed == 'all' 
+				e.dataTransfer.dropEffect = 'copy' 
 			else
-				e.data-transfer.drop-effect = 'move' 
+				e.dataTransfer.dropEffect = 'move' 
 			return false
 
 		ondragenter() {
-			if @folder != null or @browser.folder != null
+			if this.folder != null or this.browser.folder != null
 				this.draghover = true
 
 		ondragleave() {
-			if @folder != null or @browser.folder != null
+			if this.folder != null or this.browser.folder != null
 				this.draghover = false
 
 		ondrop(e) {
-			e.stop-propagation!
+			e.stopPropagation();
 			this.draghover = false
 
 			// ファイルだったら
-			if e.data-transfer.files.length > 0
-				Array.prototype.for-each.call e.data-transfer.files, (file) =>
-					@browser.upload file, @folder
+			if e.dataTransfer.files.length > 0
+				Array.prototype.for-each.call e.dataTransfer.files, (file) =>
+					this.browser.upload file, this.folder
 				return false
 
 			// データ取得
-			data = e.data-transfer.get-data 'text'
+			data = e.dataTransfer.get-data 'text'
 			if !data?
 				return false
 
@@ -68,10 +68,10 @@
 			// (ドライブの)ファイルだったら
 			if obj.type == 'file' 
 				file = obj.id
-				@browser.remove-file file
+				this.browser.remove-file file
 				this.api 'drive/files/update' do
 					file_id: file
-					folder_id: if @folder? then @folder.id else null
+					folder_id: if this.folder? then this.folder.id else null
 				.then =>
 					// something
 				.catch (err, text-status) =>
@@ -81,12 +81,12 @@
 			else if obj.type == 'folder' 
 				folder = obj.id
 				// 移動先が自分自身ならreject
-				if @folder? and folder == @folder.id
+				if this.folder? and folder == this.folder.id
 					return false
-				@browser.remove-folder folder
+				this.browser.remove-folder folder
 				this.api 'drive/folders/update' do
 					folder_id: folder
-					parent_id: if @folder? then @folder.id else null
+					parent_id: if this.folder? then this.folder.id else null
 				.then =>
 					// something
 				.catch (err, text-status) =>
diff --git a/src/web/app/desktop/tags/input-dialog.tag b/src/web/app/desktop/tags/input-dialog.tag
index a7dfdb807f..c2cf093304 100644
--- a/src/web/app/desktop/tags/input-dialog.tag
+++ b/src/web/app/desktop/tags/input-dialog.tag
@@ -150,8 +150,8 @@
 
 		on-keydown(e) {
 			if e.which == 13 // Enter
-				e.prevent-default!
-				e.stop-propagation!
+				e.preventDefault();
+				e.stopPropagation();
 				@ok!
 	</script>
 </mk-input-dialog>
diff --git a/src/web/app/desktop/tags/post-form.tag b/src/web/app/desktop/tags/post-form.tag
index 760a585ce8..b1c06143bc 100644
--- a/src/web/app/desktop/tags/post-form.tag
+++ b/src/web/app/desktop/tags/post-form.tag
@@ -345,13 +345,13 @@
 			this.update();
 
 		ondragover(e) {
-			e.stop-propagation!
+			e.stopPropagation();
 			this.draghover = true
 			// ドラッグされてきたものがファイルだったら
-			if e.data-transfer.effect-allowed == 'all' 
-				e.data-transfer.drop-effect = 'copy' 
+			if e.dataTransfer.effect-allowed == 'all' 
+				e.dataTransfer.dropEffect = 'copy' 
 			else
-				e.data-transfer.drop-effect = 'move' 
+				e.dataTransfer.dropEffect = 'move' 
 			return false
 
 		ondragenter(e) {
@@ -361,18 +361,18 @@
 			this.draghover = false
 
 		ondrop(e) {
-			e.prevent-default!
-			e.stop-propagation!
+			e.preventDefault();
+			e.stopPropagation();
 			this.draghover = false
 
 			// ファイルだったら
-			if e.data-transfer.files.length > 0
-				Array.prototype.for-each.call e.data-transfer.files, (file) =>
+			if e.dataTransfer.files.length > 0
+				Array.prototype.for-each.call e.dataTransfer.files, (file) =>
 					@upload file
 				return false
 
 			// データ取得
-			data = e.data-transfer.get-data 'text'
+			data = e.dataTransfer.get-data 'text'
 			if !data?
 				return false
 
@@ -422,12 +422,12 @@
 
 		add-file(file) {
 			file._remove = =>
-				this.files = @files.filter (x) -> x.id != file.id
-				this.trigger 'change-files' @files
+				this.files = this.files.filter (x) -> x.id != file.id
+				this.trigger 'change-files' this.files
 				this.update();
 
-			@files.push file
-			this.trigger 'change-files' @files
+			this.files.push file
+			this.trigger 'change-files' this.files
 			this.update();
 
 		add-poll() {
@@ -440,8 +440,8 @@
 		post(e) {
 			this.wait = true
 
-			files = if @files? and @files.length > 0
-				then @files.map (f) -> f.id
+			files = if this.files? and this.files.length > 0
+				then this.files.map (f) -> f.id
 				else undefined
 
 			this.api 'posts/create' do
diff --git a/src/web/app/desktop/tags/select-file-from-drive-window.tag b/src/web/app/desktop/tags/select-file-from-drive-window.tag
index f4cfd5503b..c8fc02d223 100644
--- a/src/web/app/desktop/tags/select-file-from-drive-window.tag
+++ b/src/web/app/desktop/tags/select-file-from-drive-window.tag
@@ -155,7 +155,7 @@
 			this.refs.window.refs.browser.select-local-file!
 
 		ok() {
-			this.trigger 'selected' @file
+			this.trigger 'selected' this.file
 			this.refs.window.close!
 	</script>
 </mk-select-file-from-drive-window>
diff --git a/src/web/app/desktop/tags/set-avatar-suggestion.tag b/src/web/app/desktop/tags/set-avatar-suggestion.tag
index 149144edf5..e398a6ed29 100644
--- a/src/web/app/desktop/tags/set-avatar-suggestion.tag
+++ b/src/web/app/desktop/tags/set-avatar-suggestion.tag
@@ -38,8 +38,8 @@
 			@update-avatar this.I
 
 		close(e) {
-			e.prevent-default!
-			e.stop-propagation!
+			e.preventDefault();
+			e.stopPropagation();
 			this.unmount();
 	</script>
 </mk-set-avatar-suggestion>
diff --git a/src/web/app/desktop/tags/set-banner-suggestion.tag b/src/web/app/desktop/tags/set-banner-suggestion.tag
index a1e9eb4ed8..73c67a02bd 100644
--- a/src/web/app/desktop/tags/set-banner-suggestion.tag
+++ b/src/web/app/desktop/tags/set-banner-suggestion.tag
@@ -38,8 +38,8 @@
 			@update-banner this.I
 
 		close(e) {
-			e.prevent-default!
-			e.stop-propagation!
+			e.preventDefault();
+			e.stopPropagation();
 			this.unmount();
 	</script>
 </mk-set-banner-suggestion>
diff --git a/src/web/app/desktop/tags/timeline-post.tag b/src/web/app/desktop/tags/timeline-post.tag
index 8ccf2b57c3..ea1bed257b 100644
--- a/src/web/app/desktop/tags/timeline-post.tag
+++ b/src/web/app/desktop/tags/timeline-post.tag
@@ -394,7 +394,7 @@
 				should-be-cancel = false
 
 			if should-be-cancel
-				e.prevent-default!
+				e.preventDefault();
 
 		function focus(el, fn)
 			target = fn el
diff --git a/src/web/app/desktop/tags/ui-header-account.tag b/src/web/app/desktop/tags/ui-header-account.tag
index a5308b014c..fa3f60a618 100644
--- a/src/web/app/desktop/tags/ui-header-account.tag
+++ b/src/web/app/desktop/tags/ui-header-account.tag
@@ -188,7 +188,7 @@
 				el.remove-event-listener 'mousedown' @mousedown
 
 		mousedown(e) {
-			e.prevent-default!
+			e.preventDefault();
 			if (!contains this.root, e.target) and (this.root != e.target)
 				@close!
 			return false
@@ -202,11 +202,11 @@
 			riot.mount document.body.appendChild document.createElement 'mk-settings-window' 
 
 		function contains(parent, child)
-			node = child.parent-node
+			node = child.parentNode
 			while node?
 				if node == parent
 					return true
-				node = node.parent-node
+				node = node.parentNode
 			return false
 	</script>
 </mk-ui-header-account>
diff --git a/src/web/app/desktop/tags/ui-header-notifications.tag b/src/web/app/desktop/tags/ui-header-notifications.tag
index d166df36ee..1768f915e5 100644
--- a/src/web/app/desktop/tags/ui-header-notifications.tag
+++ b/src/web/app/desktop/tags/ui-header-notifications.tag
@@ -98,17 +98,17 @@
 				el.remove-event-listener 'mousedown' @mousedown
 
 		mousedown(e) {
-			e.prevent-default!
+			e.preventDefault();
 			if (!contains this.root, e.target) and (this.root != e.target)
 				@close!
 			return false
 
 		function contains(parent, child)
-			node = child.parent-node
+			node = child.parentNode
 			while node?
 				if node == parent
 					return true
-				node = node.parent-node
+				node = node.parentNode
 			return false
 	</script>
 </mk-ui-header-notifications>
diff --git a/src/web/app/desktop/tags/ui-header-search.tag b/src/web/app/desktop/tags/ui-header-search.tag
index 702c70efc8..69d2dd7324 100644
--- a/src/web/app/desktop/tags/ui-header-search.tag
+++ b/src/web/app/desktop/tags/ui-header-search.tag
@@ -35,7 +35,7 @@
 		this.mixin('page');
 
 		onsubmit(e) {
-			e.prevent-default!
+			e.preventDefault();
 			@page '/search:' + this.refs.q.value
 	</script>
 </mk-ui-header-search>
diff --git a/src/web/app/desktop/tags/ui.tag b/src/web/app/desktop/tags/ui.tag
index 78bf6117cc..1ecb0f5706 100644
--- a/src/web/app/desktop/tags/ui.tag
+++ b/src/web/app/desktop/tags/ui.tag
@@ -31,7 +31,7 @@
 			tag = e.target.tag-name.to-lower-case!
 			if tag != 'input' and tag != 'textarea' 
 				if e.which == 80 or e.which == 78 // p or n
-					e.prevent-default!
+					e.preventDefault();
 					@open-post-form!
 	</script>
 </mk-ui>
diff --git a/src/web/app/desktop/tags/window.tag b/src/web/app/desktop/tags/window.tag
index f3d8ff7bea..71084f8b54 100644
--- a/src/web/app/desktop/tags/window.tag
+++ b/src/web/app/desktop/tags/window.tag
@@ -208,7 +208,7 @@
 			this.refs.main.style.left = (window.inner-width / 2) - (this.refs.main.offset-width / 2) + 'px' 
 
 			this.refs.header.add-event-listener 'contextmenu' (e) =>
-				e.prevent-default!
+				e.preventDefault();
 
 			window.add-event-listener 'resize' this.on-browser-resize
 
@@ -315,7 +315,7 @@
 				if @is-modal then this.refs.bg.style.z-index = z + 1
 
 		repel-move(e) {
-			e.stop-propagation!
+			e.stopPropagation();
 			return true
 
 		bg-click() {
@@ -328,7 +328,7 @@
 
 		// ヘッダー掴み時
 		on-header-mousedown(e) {
-			e.prevent-default!
+			e.preventDefault();
 
 			if not contains this.refs.main, document.active-element
 				this.refs.main.focus();
@@ -370,7 +370,7 @@
 
 		// 上ハンドル掴み時
 		on-top-handle-mousedown(e) {
-			e.prevent-default!
+			e.preventDefault();
 
 			base = e.client-y
 			height = parse-int((get-computed-style this.refs.main, '').height, 10)
@@ -392,7 +392,7 @@
 
 		// 右ハンドル掴み時
 		on-right-handle-mousedown(e) {
-			e.prevent-default!
+			e.preventDefault();
 
 			base = e.client-x
 			width = parse-int((get-computed-style this.refs.main, '').width, 10)
@@ -412,7 +412,7 @@
 
 		// 下ハンドル掴み時
 		on-bottom-handle-mousedown(e) {
-			e.prevent-default!
+			e.preventDefault();
 
 			base = e.client-y
 			height = parse-int((get-computed-style this.refs.main, '').height, 10)
@@ -432,7 +432,7 @@
 
 		// 左ハンドル掴み時
 		on-left-handle-mousedown(e) {
-			e.prevent-default!
+			e.preventDefault();
 
 			base = e.client-x
 			width = parse-int((get-computed-style this.refs.main, '').width, 10)
@@ -499,21 +499,21 @@
 			window.remove-event-listener 'mouseup'    drag-clear
 
 		ondragover(e) {
-			e.data-transfer.drop-effect = 'none' 
+			e.dataTransfer.dropEffect = 'none' 
 
 		on-keydown(e) {
 			if e.which == 27 // Esc
 				if @can-close
-					e.prevent-default!
-					e.stop-propagation!
+					e.preventDefault();
+					e.stopPropagation();
 					@close!
 
 		function contains(parent, child)
-			node = child.parent-node
+			node = child.parentNode
 			while node?
 				if node == parent
 					return true
-				node = node.parent-node
+				node = node.parentNode
 			return false
 	</script>
 </mk-window>
diff --git a/src/web/app/dev/tags/new-app-form.tag b/src/web/app/dev/tags/new-app-form.tag
index a298d5ce0a..84e099612a 100644
--- a/src/web/app/dev/tags/new-app-form.tag
+++ b/src/web/app/dev/tags/new-app-form.tag
@@ -238,6 +238,6 @@
 			.catch =>
 				alert 'アプリの作成に失敗しました。再度お試しください。'
 
-				locker.parent-node.remove-child locker
+				locker.parentNode.removeChild locker
 	</script>
 </mk-new-app-form>
diff --git a/src/web/app/mobile/tags/drive-selector.tag b/src/web/app/mobile/tags/drive-selector.tag
index d1ecc29b57..ce9bdd2b56 100644
--- a/src/web/app/mobile/tags/drive-selector.tag
+++ b/src/web/app/mobile/tags/drive-selector.tag
@@ -68,7 +68,7 @@
 			this.unmount();
 
 		ok() {
-			this.trigger 'selected' @files
+			this.trigger 'selected' this.files
 			this.unmount();
 	</script>
 </mk-drive-selector>
diff --git a/src/web/app/mobile/tags/drive.tag b/src/web/app/mobile/tags/drive.tag
index f7fc07f00a..ddaf600619 100644
--- a/src/web/app/mobile/tags/drive.tag
+++ b/src/web/app/mobile/tags/drive.tag
@@ -171,7 +171,7 @@
 			@add-file file, true
 
 		on-stream-drive-file-updated(file) {
-			current = if @folder? then @folder.id else null
+			current = if this.folder? then this.folder.id else null
 			if current != file.folder_id
 				@remove-file file
 			else
@@ -181,7 +181,7 @@
 			@add-folder folder, true
 
 		on-stream-drive-folder-updated(folder) {
-			current = if @folder? then @folder.id else null
+			current = if this.folder? then this.folder.id else null
 			if current != folder.parent_id
 				@remove-folder folder
 			else
@@ -221,58 +221,58 @@
 					x folder.parent
 
 				this.update();
-				this.trigger 'open-folder' @folder, silent
+				this.trigger 'open-folder' this.folder, silent
 				@load!
 			.catch (err, text-status) ->
 				console.error err
 
 		add-folder(folder, unshift = false) {
-			current = if @folder? then @folder.id else null
+			current = if this.folder? then this.folder.id else null
 			if current != folder.parent_id
 				return
 
-			if (@folders.some (f) => f.id == folder.id)
+			if (this.folders.some (f) => f.id == folder.id)
 				return
 
 			if unshift
-				@folders.unshift folder
+				this.folders.unshift folder
 			else
-				@folders.push folder
+				this.folders.push folder
 
 			this.update();
 
 		add-file(file, unshift = false) {
-			current = if @folder? then @folder.id else null
+			current = if this.folder? then this.folder.id else null
 			if current != file.folder_id
 				return
 
-			if (@files.some (f) => f.id == file.id)
-				exist = (@files.map (f) -> f.id).index-of file.id
-				@files[exist] = file
+			if (this.files.some (f) => f.id == file.id)
+				exist = (this.files.map (f) -> f.id).index-of file.id
+				this.files[exist] = file
 				this.update();
 				return
 
 			if unshift
-				@files.unshift file
+				this.files.unshift file
 			else
-				@files.push file
+				this.files.push file
 
 			this.update();
 
 		remove-folder(folder) {
 			if typeof folder == 'object' 
 				folder = folder.id
-			this.folders = @folders.filter (f) -> f.id != folder
+			this.folders = this.folders.filter (f) -> f.id != folder
 			this.update();
 
 		remove-file(file) {
 			if typeof file == 'object' 
 				file = file.id
-			this.files = @files.filter (f) -> f.id != file
+			this.files = this.files.filter (f) -> f.id != file
 			this.update();
 
 		go-root() {
-			if @folder != null or @file != null
+			if this.folder != null or this.file != null
 				this.file = null
 				this.folder = null
 				this.hierarchy-folders = []
@@ -298,7 +298,7 @@
 
 			// フォルダ一覧取得
 			this.api 'drive/folders' do
-				folder_id: if @folder? then @folder.id else null
+				folder_id: if this.folder? then this.folder.id else null
 				limit: folders-max + 1
 			.then (folders) =>
 				if folders.length == folders-max + 1
@@ -311,7 +311,7 @@
 
 			// ファイル一覧取得
 			this.api 'drive/files' do
-				folder_id: if @folder? then @folder.id else null
+				folder_id: if this.folder? then this.folder.id else null
 				limit: files-max + 1
 			.then (files) =>
 				if files.length == files-max + 1
@@ -372,6 +372,6 @@
 					x file.folder
 
 				this.update();
-				this.trigger 'open-file' @file, silent
+				this.trigger 'open-file' this.file, silent
 	</script>
 </mk-drive>
diff --git a/src/web/app/mobile/tags/drive/file-viewer.tag b/src/web/app/mobile/tags/drive/file-viewer.tag
index 86f6ca0c5e..eff41ab85f 100644
--- a/src/web/app/mobile/tags/drive/file-viewer.tag
+++ b/src/web/app/mobile/tags/drive/file-viewer.tag
@@ -180,22 +180,22 @@
 
 	</style>
 	<script>
-		this.bytes-to-size = require('../../../common/scripts/bytes-to-size.js');
-		this.get-gcd = require('../../../common/scripts/gcd.js');
+		this.bytesToSize = require('../../../common/scripts/bytes-to-size.js');
+		this.getGcd = require('../../../common/scripts/gcd.js');
 
 		this.mixin('api');
 
 		this.file = this.opts.file
-		this.kind = @file.type.split '/' .0
+		this.kind = this.file.type.split '/' .0
 
 		rename() {
-			name = window.prompt '名前を変更' @file.name
-			if name? and name != '' and name != @file.name
+			name = window.prompt '名前を変更' this.file.name
+			if name? and name != '' and name != this.file.name
 				this.api 'drive/files/update' do
-					file_id: @file.id
+					file_id: this.file.id
 					name: name
 				.then =>
-					this.parent.cf @file, true
+					this.parent.cf this.file, true
 
 	</script>
 </mk-drive-file-viewer>
diff --git a/src/web/app/mobile/tags/drive/file.tag b/src/web/app/mobile/tags/drive/file.tag
index 16fa74b4bf..c831349197 100644
--- a/src/web/app/mobile/tags/drive/file.tag
+++ b/src/web/app/mobile/tags/drive/file.tag
@@ -122,16 +122,16 @@
 
 	</style>
 	<script>
-		this.bytes-to-size = require('../../../common/scripts/bytes-to-size.js');
+		this.bytesToSize = require('../../../common/scripts/bytesToSize.js');
 
 		this.browser = this.parent
 		this.file = this.opts.file
-		this.is-selected = @browser.selected-files.some (f) => f.id == @file.id
+		this.is-selected = this.browser.selected-files.some (f) => f.id == this.file.id
 
-		@browser.on('change-selected', (selects) => {
-			this.is-selected = selects.some (f) => f.id == @file.id
+		this.browser.on('change-selected', (selects) => {
+			this.is-selected = selects.some (f) => f.id == this.file.id
 
 		onclick() {
-			@browser.choose-file @file
+			this.browser.choose-file this.file
 	</script>
 </mk-drive-file>
diff --git a/src/web/app/mobile/tags/drive/folder.tag b/src/web/app/mobile/tags/drive/folder.tag
index aeb1601a61..c536fed9d9 100644
--- a/src/web/app/mobile/tags/drive/folder.tag
+++ b/src/web/app/mobile/tags/drive/folder.tag
@@ -41,6 +41,6 @@
 		this.folder = this.opts.folder
 
 		onclick() {
-			@browser.move @folder
+			this.browser.move this.folder
 	</script>
 </mk-drive-folder>
diff --git a/src/web/app/mobile/tags/post-form.tag b/src/web/app/mobile/tags/post-form.tag
index e53339dd47..72778f3b40 100644
--- a/src/web/app/mobile/tags/post-form.tag
+++ b/src/web/app/mobile/tags/post-form.tag
@@ -238,12 +238,12 @@
 
 		add-file(file) {
 			file._remove = =>
-				this.files = @files.filter (x) -> x.id != file.id
-				this.trigger 'change-files' @files
+				this.files = this.files.filter (x) -> x.id != file.id
+				this.trigger 'change-files' this.files
 				this.update();
 
-			@files.push file
-			this.trigger 'change-files' @files
+			this.files.push file
+			this.trigger 'change-files' this.files
 			this.update();
 
 		add-poll() {
@@ -256,8 +256,8 @@
 		post() {
 			this.wait = true
 
-			files = if @files? and @files.length > 0
-				then @files.map (f) -> f.id
+			files = if this.files? and this.files.length > 0
+				then this.files.map (f) -> f.id
 				else undefined
 
 			this.api 'posts/create' do