diff --git a/demos/autocomplete/multiple-remote.html b/demos/autocomplete/multiple-remote.html
index 0cf75c5db..7638833bb 100644
--- a/demos/autocomplete/multiple-remote.html
+++ b/demos/autocomplete/multiple-remote.html
@@ -13,7 +13,7 @@
 	<link rel="stylesheet" href="../demos.css">
 	<style>
 	.ui-autocomplete-loading {
-		background: white url('images/ui-anim_basic_16x16.gif') right center no-repeat;
+		background: white url("images/ui-anim_basic_16x16.gif") right center no-repeat;
 	}
 	</style>
 	<script>
diff --git a/demos/autocomplete/remote-jsonp.html b/demos/autocomplete/remote-jsonp.html
index efe13c10b..3cd718862 100644
--- a/demos/autocomplete/remote-jsonp.html
+++ b/demos/autocomplete/remote-jsonp.html
@@ -13,7 +13,7 @@
 	<link rel="stylesheet" href="../demos.css">
 	<style>
 	.ui-autocomplete-loading {
-		background: white url('images/ui-anim_basic_16x16.gif') right center no-repeat;
+		background: white url("images/ui-anim_basic_16x16.gif") right center no-repeat;
 	}
 	#city { width: 25em; }
 	</style>
diff --git a/demos/autocomplete/remote-with-cache.html b/demos/autocomplete/remote-with-cache.html
index 27d2fb8a7..200949bb8 100644
--- a/demos/autocomplete/remote-with-cache.html
+++ b/demos/autocomplete/remote-with-cache.html
@@ -13,7 +13,7 @@
 	<link rel="stylesheet" href="../demos.css">
 	<style>
 	.ui-autocomplete-loading {
-		background: white url('images/ui-anim_basic_16x16.gif') right center no-repeat;
+		background: white url("images/ui-anim_basic_16x16.gif") right center no-repeat;
 	}
 	</style>
 	<script>
diff --git a/demos/autocomplete/remote.html b/demos/autocomplete/remote.html
index 4fef00e93..d553aa13c 100644
--- a/demos/autocomplete/remote.html
+++ b/demos/autocomplete/remote.html
@@ -13,7 +13,7 @@
 	<link rel="stylesheet" href="../demos.css">
 	<style>
 	.ui-autocomplete-loading {
-		background: white url('images/ui-anim_basic_16x16.gif') right center no-repeat;
+		background: white url("images/ui-anim_basic_16x16.gif") right center no-repeat;
 	}
 	</style>
 	<script>
diff --git a/demos/autocomplete/xml.html b/demos/autocomplete/xml.html
index fc86bc88a..b60122021 100644
--- a/demos/autocomplete/xml.html
+++ b/demos/autocomplete/xml.html
@@ -12,7 +12,9 @@
 	<script src="../../ui/autocomplete.js"></script>
 	<link rel="stylesheet" href="../demos.css">
 	<style>
-	.ui-autocomplete-loading { background: white url('images/ui-anim_basic_16x16.gif') right center no-repeat; }
+	.ui-autocomplete-loading {
+		background: white url("images/ui-anim_basic_16x16.gif") right center no-repeat;
+	}
 	</style>
 	<script>
 	$(function() {
diff --git a/demos/selectmenu/custom_render.html b/demos/selectmenu/custom_render.html
index a2bbb0fb6..44860dbea 100644
--- a/demos/selectmenu/custom_render.html
+++ b/demos/selectmenu/custom_render.html
@@ -75,13 +75,13 @@
 			top: 0.1em;
 		}
 		.ui-icon.video {
-			background: url(images/24-video-square.png) 0 0 no-repeat;
+			background: url("images/24-video-square.png") 0 0 no-repeat;
 		}
 		.ui-icon.podcast {
-			background: url(images/24-podcast-square.png) 0 0 no-repeat;
+			background: url("images/24-podcast-square.png") 0 0 no-repeat;
 		}
 		.ui-icon.rss {
-			background: url(images/24-rss-square.png) 0 0 no-repeat;
+			background: url("images/24-rss-square.png") 0 0 no-repeat;
 		}
 
 		/* select with CSS avatar icons */
@@ -126,9 +126,9 @@
 		<fieldset>
 			<label for="people">Select a Person:</label>
 			<select name="people" id="people">
-				<option value="1" class="avatar" style="background-image: url(http://www.gravatar.com/avatar/b3e04a46e85ad3e165d66f5d927eb609?d=monsterid&amp;r=g&amp;s=16);">John Resig</option>
-				<option value="2" class="avatar" style="background-image: url(http://www.gravatar.com/avatar/e42b1e5c7cfd2be0933e696e292a4d5f?d=monsterid&amp;r=g&amp;s=16);">Tauren Mills</option>
-				<option value="3" class="avatar" style="background-image: url(http://www.gravatar.com/avatar/bdeaec11dd663f26fa58ced0eb7facc8?d=monsterid&amp;r=g&amp;s=16);">Jane Doe</option>
+				<option value="1" class="avatar" style="background-image: url('http://www.gravatar.com/avatar/b3e04a46e85ad3e165d66f5d927eb609?d=monsterid&amp;r=g&amp;s=16');">John Resig</option>
+				<option value="2" class="avatar" style="background-image: url('http://www.gravatar.com/avatar/e42b1e5c7cfd2be0933e696e292a4d5f?d=monsterid&amp;r=g&amp;s=16');">Tauren Mills</option>
+				<option value="3" class="avatar" style="background-image: url('http://www.gravatar.com/avatar/bdeaec11dd663f26fa58ced0eb7facc8?d=monsterid&amp;r=g&amp;s=16');">Jane Doe</option>
 			</select>
 		</fieldset>
 
diff --git a/themes/base/menu.css b/themes/base/menu.css
index 7970422c7..719b42646 100644
--- a/themes/base/menu.css
+++ b/themes/base/menu.css
@@ -25,7 +25,7 @@
 	cursor: pointer;
 	min-height: 0; /* support: IE7 */
 	/* support: IE10, see #8844 */
-	list-style-image: url(data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7);
+	list-style-image: url("data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7");
 }
 .ui-menu .ui-menu-divider {
 	margin: 5px 0;
diff --git a/themes/base/theme.css b/themes/base/theme.css
index 71bd15664..d9fffe1c7 100644
--- a/themes/base/theme.css
+++ b/themes/base/theme.css
@@ -30,7 +30,7 @@
 }
 .ui-widget-content {
 	border: 1px solid #aaaaaa/*{borderColorContent}*/;
-	background: #ffffff/*{bgColorContent}*/ url(images/ui-bg_flat_75_ffffff_40x100.png)/*{bgImgUrlContent}*/ 50%/*{bgContentXPos}*/ 50%/*{bgContentYPos}*/ repeat-x/*{bgContentRepeat}*/;
+	background: #ffffff/*{bgColorContent}*/ url("images/ui-bg_flat_75_ffffff_40x100.png")/*{bgImgUrlContent}*/ 50%/*{bgContentXPos}*/ 50%/*{bgContentYPos}*/ repeat-x/*{bgContentRepeat}*/;
 	color: #222222/*{fcContent}*/;
 }
 .ui-widget-content a {
@@ -38,7 +38,7 @@
 }
 .ui-widget-header {
 	border: 1px solid #aaaaaa/*{borderColorHeader}*/;
-	background: #cccccc/*{bgColorHeader}*/ url(images/ui-bg_highlight-soft_75_cccccc_1x100.png)/*{bgImgUrlHeader}*/ 50%/*{bgHeaderXPos}*/ 50%/*{bgHeaderYPos}*/ repeat-x/*{bgHeaderRepeat}*/;
+	background: #cccccc/*{bgColorHeader}*/ url("images/ui-bg_highlight-soft_75_cccccc_1x100.png")/*{bgImgUrlHeader}*/ 50%/*{bgHeaderXPos}*/ 50%/*{bgHeaderYPos}*/ repeat-x/*{bgHeaderRepeat}*/;
 	color: #222222/*{fcHeader}*/;
 	font-weight: bold;
 }
@@ -52,7 +52,7 @@
 .ui-widget-content .ui-state-default,
 .ui-widget-header .ui-state-default {
 	border: 1px solid #d3d3d3/*{borderColorDefault}*/;
-	background: #e6e6e6/*{bgColorDefault}*/ url(images/ui-bg_glass_75_e6e6e6_1x400.png)/*{bgImgUrlDefault}*/ 50%/*{bgDefaultXPos}*/ 50%/*{bgDefaultYPos}*/ repeat-x/*{bgDefaultRepeat}*/;
+	background: #e6e6e6/*{bgColorDefault}*/ url("images/ui-bg_glass_75_e6e6e6_1x400.png")/*{bgImgUrlDefault}*/ 50%/*{bgDefaultXPos}*/ 50%/*{bgDefaultYPos}*/ repeat-x/*{bgDefaultRepeat}*/;
 	font-weight: normal/*{fwDefault}*/;
 	color: #555555/*{fcDefault}*/;
 }
@@ -69,7 +69,7 @@
 .ui-widget-content .ui-state-focus,
 .ui-widget-header .ui-state-focus {
 	border: 1px solid #999999/*{borderColorHover}*/;
-	background: #dadada/*{bgColorHover}*/ url(images/ui-bg_glass_75_dadada_1x400.png)/*{bgImgUrlHover}*/ 50%/*{bgHoverXPos}*/ 50%/*{bgHoverYPos}*/ repeat-x/*{bgHoverRepeat}*/;
+	background: #dadada/*{bgColorHover}*/ url("images/ui-bg_glass_75_dadada_1x400.png")/*{bgImgUrlHover}*/ 50%/*{bgHoverXPos}*/ 50%/*{bgHoverYPos}*/ repeat-x/*{bgHoverRepeat}*/;
 	font-weight: normal/*{fwDefault}*/;
 	color: #212121/*{fcHover}*/;
 }
@@ -88,7 +88,7 @@
 .ui-widget-content .ui-state-active,
 .ui-widget-header .ui-state-active {
 	border: 1px solid #aaaaaa/*{borderColorActive}*/;
-	background: #ffffff/*{bgColorActive}*/ url(images/ui-bg_glass_65_ffffff_1x400.png)/*{bgImgUrlActive}*/ 50%/*{bgActiveXPos}*/ 50%/*{bgActiveYPos}*/ repeat-x/*{bgActiveRepeat}*/;
+	background: #ffffff/*{bgColorActive}*/ url("images/ui-bg_glass_65_ffffff_1x400.png")/*{bgImgUrlActive}*/ 50%/*{bgActiveXPos}*/ 50%/*{bgActiveYPos}*/ repeat-x/*{bgActiveRepeat}*/;
 	font-weight: normal/*{fwDefault}*/;
 	color: #212121/*{fcActive}*/;
 }
@@ -105,7 +105,7 @@
 .ui-widget-content .ui-state-highlight,
 .ui-widget-header .ui-state-highlight {
 	border: 1px solid #fcefa1/*{borderColorHighlight}*/;
-	background: #fbf9ee/*{bgColorHighlight}*/ url(images/ui-bg_glass_55_fbf9ee_1x400.png)/*{bgImgUrlHighlight}*/ 50%/*{bgHighlightXPos}*/ 50%/*{bgHighlightYPos}*/ repeat-x/*{bgHighlightRepeat}*/;
+	background: #fbf9ee/*{bgColorHighlight}*/ url("images/ui-bg_glass_55_fbf9ee_1x400.png")/*{bgImgUrlHighlight}*/ 50%/*{bgHighlightXPos}*/ 50%/*{bgHighlightYPos}*/ repeat-x/*{bgHighlightRepeat}*/;
 	color: #363636/*{fcHighlight}*/;
 }
 .ui-state-highlight a,
@@ -117,7 +117,7 @@
 .ui-widget-content .ui-state-error,
 .ui-widget-header .ui-state-error {
 	border: 1px solid #cd0a0a/*{borderColorError}*/;
-	background: #fef1ec/*{bgColorError}*/ url(images/ui-bg_glass_95_fef1ec_1x400.png)/*{bgImgUrlError}*/ 50%/*{bgErrorXPos}*/ 50%/*{bgErrorYPos}*/ repeat-x/*{bgErrorRepeat}*/;
+	background: #fef1ec/*{bgColorError}*/ url("images/ui-bg_glass_95_fef1ec_1x400.png")/*{bgImgUrlError}*/ 50%/*{bgErrorXPos}*/ 50%/*{bgErrorYPos}*/ repeat-x/*{bgErrorRepeat}*/;
 	color: #cd0a0a/*{fcError}*/;
 }
 .ui-state-error a,
@@ -163,27 +163,27 @@
 }
 .ui-icon,
 .ui-widget-content .ui-icon {
-	background-image: url(images/ui-icons_222222_256x240.png)/*{iconsContent}*/;
+	background-image: url("images/ui-icons_222222_256x240.png")/*{iconsContent}*/;
 }
 .ui-widget-header .ui-icon {
-	background-image: url(images/ui-icons_222222_256x240.png)/*{iconsHeader}*/;
+	background-image: url("images/ui-icons_222222_256x240.png")/*{iconsHeader}*/;
 }
 .ui-state-default .ui-icon {
-	background-image: url(images/ui-icons_888888_256x240.png)/*{iconsDefault}*/;
+	background-image: url("images/ui-icons_888888_256x240.png")/*{iconsDefault}*/;
 }
 .ui-state-hover .ui-icon,
 .ui-state-focus .ui-icon {
-	background-image: url(images/ui-icons_454545_256x240.png)/*{iconsHover}*/;
+	background-image: url("images/ui-icons_454545_256x240.png")/*{iconsHover}*/;
 }
 .ui-state-active .ui-icon {
-	background-image: url(images/ui-icons_454545_256x240.png)/*{iconsActive}*/;
+	background-image: url("images/ui-icons_454545_256x240.png")/*{iconsActive}*/;
 }
 .ui-state-highlight .ui-icon {
-	background-image: url(images/ui-icons_2e83ff_256x240.png)/*{iconsHighlight}*/;
+	background-image: url("images/ui-icons_2e83ff_256x240.png")/*{iconsHighlight}*/;
 }
 .ui-state-error .ui-icon,
 .ui-state-error-text .ui-icon {
-	background-image: url(images/ui-icons_cd0a0a_256x240.png)/*{iconsError}*/;
+	background-image: url("images/ui-icons_cd0a0a_256x240.png")/*{iconsError}*/;
 }
 
 /* positioning */
@@ -396,14 +396,14 @@
 
 /* Overlays */
 .ui-widget-overlay {
-	background: #aaaaaa/*{bgColorOverlay}*/ url(images/ui-bg_flat_0_aaaaaa_40x100.png)/*{bgImgUrlOverlay}*/ 50%/*{bgOverlayXPos}*/ 50%/*{bgOverlayYPos}*/ repeat-x/*{bgOverlayRepeat}*/;
+	background: #aaaaaa/*{bgColorOverlay}*/ url("images/ui-bg_flat_0_aaaaaa_40x100.png")/*{bgImgUrlOverlay}*/ 50%/*{bgOverlayXPos}*/ 50%/*{bgOverlayYPos}*/ repeat-x/*{bgOverlayRepeat}*/;
 	opacity: .3/*{opacityOverlay}*/;
 	filter: Alpha(Opacity=30)/*{opacityFilterOverlay}*/;
 }
 .ui-widget-shadow {
 	margin: -8px/*{offsetTopShadow}*/ 0 0 -8px/*{offsetLeftShadow}*/;
 	padding: 8px/*{thicknessShadow}*/;
-	background: #aaaaaa/*{bgColorShadow}*/ url(images/ui-bg_flat_0_aaaaaa_40x100.png)/*{bgImgUrlShadow}*/ 50%/*{bgShadowXPos}*/ 50%/*{bgShadowYPos}*/ repeat-x/*{bgShadowRepeat}*/;
+	background: #aaaaaa/*{bgColorShadow}*/ url("images/ui-bg_flat_0_aaaaaa_40x100.png")/*{bgImgUrlShadow}*/ 50%/*{bgShadowXPos}*/ 50%/*{bgShadowYPos}*/ repeat-x/*{bgShadowRepeat}*/;
 	opacity: .3/*{opacityShadow}*/;
 	filter: Alpha(Opacity=30)/*{opacityFilterShadow}*/;
 	border-radius: 8px/*{cornerRadiusShadow}*/;