Edit C:\galaxie\Back\galaxie\skins\default\css\jquery.ui\jquery.ui.menubar.css

/*
 * jQuery UI Menubar @VERSION
 *
 * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT or GPL Version 2 licenses.
 * http://jquery.org/license
 */
.ui-menubar { list-style: none; margin: 0; padding-left: 0; }

.ui-menubar-item { float: left;}
.ui-menubar-item img { 	
	margin: 0px;
	padding:0px;
	border: 0px;
}

.ui-menubar .ui-button { float: left; font-weight: normal; border-top-width: 0 !important; border-bottom-width: 0 !important; margin: 0; outline: none; }
.ui-menubar .ui-menubar-link { /*border-right: 1px dashed transparent; border-left: 1px dashed transparent;*/ }

.ui-menubar .ui-menu { 
	border:1px solid #c6c6c6; 
	/*width: 200px;*/ 
	position: absolute; 
	z-index: 9999; 
	font-weight: normal; 
	
	background-color:#f5f5f5;
	background-image: -webkit-gradient(linear,left top,left bottom,from(#f5f5f5),to(#f1f1f1));
	background-image: -webkit-linear-gradient(top,#f5f5f5,#f1f1f1);
	background-image: -moz-linear-gradient(top,#f5f5f5,#f1f1f1);
	background-image: -ms-linear-gradient(top,#f5f5f5,#f1f1f1);
	background-image: -o-linear-gradient(top,#f5f5f5,#f1f1f1);
	background-image: linear-gradient(top,#f5f5f5,#f1f1f1);
	filter: progid:DXImageTransform.Microsoft.gradient(startColorStr='#f5f5f5',EndColorStr='#f1f1f1');
}

.ui-menu-item {
	opacity: 0.55; 
}

.ui-menu-item a img {
	margin: 0px;
	padding:0px;
	border: 0px;
}

.ui-menu-item:hover {
	opacity: 1; 
}

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