remove some of the flickering in opera

apps/media/css/music.css

@@ -20,8 +20,8 @@ div.jp-volume-bar-value { background:#ccc; width:0; height:0.4em; }
 
 #collection { padding-top:1em; position:relative; width:100%; float:left; }
 #collection li.album,#collection li.song { margin-left:3em; }
-#leftcontent img.remove { display:none; float:right; cursor:pointer; }
-#leftcontent li:hover img.remove { display:inline; }
+#leftcontent img.remove { display:none; float:right; cursor:pointer; opacity: 0; }
+#leftcontent li:hover img.remove { display:inline; opacity: .3; }
 #leftcontent li div.label { float: left; width: 200px; overflow: hidden; text-overflow: ellipsis; }
 #collection li button { float:right; }
 #collection li,#playlist li { list-style-type:none; }

core/css/styles.css

@@ -106,6 +106,7 @@ label.infield { cursor: text !important; }
 #notification { z-index:101; cursor:pointer; background-color:#fc4; border:0; padding:0 .7em .3em; display:none; position:fixed; left:50%; top:0; -moz-border-radius-bottomleft:1em; -webkit-border-bottom-left-radius:1em; border-bottom-left-radius:1em; -moz-border-radius-bottomright:1em; -webkit-border-bottom-right-radius:1em; border-bottom-right-radius:1em; }
 
 .action, .selectedActions a, #logout { opacity:.3; -webkit-transition:opacity 500ms; -moz-transition:opacity 500ms; -o-transition:opacity 500ms; transition:opacity 500ms; }
+.action { width: 16px; height: 16px; }
 .action:hover, .selectedActions a:hover, #logout:hover { opacity:1; }
 
 table:not(.nostyle) tr { -webkit-transition:background-color 500ms; -moz-transition:background-color 500ms; -o-transition:background-color 500ms; transition:background-color 500ms; }

files/css/files.css

@@ -70,6 +70,7 @@ table thead.fixed { height:2em; }
 #select_all { float:left; margin:.3em 0.6em 0 .5em; }
 #uploadsize-message,#delete-confirm { display:none; }
 .selectedActions a,#fileList a.action { float:right; display:inline; margin:0 .5em; padding:.3em .3em 0 .3em !important; }
+a.action>img{ max-height:16px; max-width:16px; }
 .selectedActions { display:none; }
 
 /* add breadcrumb divider to the File item in navigation panel */

files/js/fileactions.js

@@ -66,7 +66,7 @@ FileActions={
 				if(img.call){
 					img=img(file);
 				}
-				var html='<a href="#" title="'+name+'" class="action" />';
+				var html='<a href="#" title="'+name+'" class="action" style="display:none" />';
 				var element=$(html);
 				if(img){
 					element.append($('<img src="'+img+'"/>'));
@@ -80,6 +80,7 @@ FileActions={
 					FileActions.hide();
 					action(currentFile);
 				});
+				element.hide();
 				parent.children('a.name').append(element);
 			}
 		}
@@ -88,7 +89,7 @@ FileActions={
 			if(img.call){
 				img=img(file);
 			}
-			var html='<a href="#" title="Delete" class="action" />';
+			var html='<a href="#" title="Delete" class="action" style="display:none" />';
 			var element=$(html);
 			if(img){
 				element.append($('<img src="'+img+'"/>'));
@@ -102,10 +103,13 @@ FileActions={
 				FileActions.hide();
 				action(currentFile);
 			});
+			element.hide();
 			parent.parent().children().last().append(element);
 		}
-		$('#fileList .action').hide();
-		$('#fileList .action').fadeIn(200);
+		$('#fileList .action').css('-o-transition-property','none');//temporarly disable 
+		$('#fileList .action').fadeIn(200,function(){
+			$('#fileList .action').css('-o-transition-property','opacity');
+		});
 		return false;
 	},
 	hide:function(){