.mask {
	position: absolute;
	top: 0px;
	left: 0px; margin : 0 auto;
	z-index: 999;
	background: #bfbfbf;
	width: 100%;
	margin: 0 auto;
    filter:alpha(opacity=50);    /* ie5-7  */
    -moz-opacity:0.5;    /* old mozilla browser like netscape  */
    -khtml-opacity: 0.5; /* for really really old safari */
    opacity: 0.5;    	 /* css standard, currently it works in most modern browsers like firefox*/
}
.mask_shadow{
	opacity: 0.2;
	border: 6px solid #777777;
}
.mask_box {
	position: absolute;
	z-index: 1000;
	background: #ffffff;
	border: 6px solid #777777;
}
.mask_frame{
	border: 0px;
    overflow-x:hidden;
}
.mask_close{
	height:45px;
	width:41px;
	position:absolute;
	right:1px;
	top:1px;
	cursor:pointer;
	border:0px;
	background: url("../images/background.png") no-repeat  -436px -83px;
}