#loading_spinner{
	display:    none;
	position:   fixed;
	z-index:    99999999;
	top:        0;
	left:       0;
	height:     100%;
	width:      100%;
	background: #CCC
					url('/images/ajax-loader.gif') 
					50% 50% 
					no-repeat;
	opacity: 0.8;
	-ms-filter: progid:DXImageTransform.Microsoft.Alpha(Opacity = 80);
	filter: alpha(opacity = 80);
}

#loading_spinner_hidden{
	display:    none;
	position:   fixed;
	z-index:    99999999;
	top:        0;
	left:       0;
	height:     100%;
	width:      100%;
	background: #CCC
			url('/images/ajax-loader.gif') 
			50% 50% 
			no-repeat;
	opacity: 0.5;
	-ms-filter: progid:DXImageTransform.Microsoft.Alpha(Opacity = 50);
	filter: alpha(opacity = 50);
}