.mydiv {
background-color: #FFCC66;
line-height: 40px;
border-top-color:#000000
z-index:999;
width: 600px;
height: 420px;
left:50%;
top:50%;
margin-left:-300px!important;/*FF IE7 该值为本身宽的一半 */
margin-top:-200px!important;/*FF IE7 该值为本身高的一半*/
margin-top:0px;
position:fixed!important;/* FF IE7*/
position:absolute;/*IE6*/
_top:       expression(eval(document.compatMode &&
            document.compatMode=='CSS1Compat') ?
            documentElement.scrollTop + (document.documentElement.clientHeight-this.offsetHeight)/2 :/*IE6*/
            document.body.scrollTop + (document.body.clientHeight - this.clientHeight)/2);/*IE5 IE5.5*/

}

.bg,.popIframe {
background-color: #666; display:none;
width: 100%;
height: 100%;
left:0;
top:0;/*FF IE7*/
filter:alpha(opacity=50);/*IE*/
opacity:0.5;/*FF*/
z-index:1;
position:fixed!important;/*FF IE7*/
position:absolute;/*IE6*/
_top:       expression(eval(document.compatMode &&
            document.compatMode=='CSS1Compat') ?
            documentElement.scrollTop + (document.documentElement.clientHeight-this.offsetHeight)/2 :/*IE6*/
            document.body.scrollTop + (document.body.clientHeight - this.clientHeight)/2);/* www.codefans.net IE5 IE5.5*/
}
.popIframe {
filter:alpha(opacity=0);/*IE*/
opacity:0;/*FF*/
}
/* 弹出框 */
.tck { display: block; position: absolute; top: 0; left: 0; width:600px; height:auto;background-color: white;z-index:1002;}
.tck .hd { height:35px; background:url(../images/tck_head.gif) repeat; line-height:35px; padding:0px 4px; font-size:14px; font-weight:bold; text-align:center;}
.tck .hd span { float:left; color:#fff;}
.tck .hd img { padding-top:0px;}
.tck .bd { border:2px solid #4A6BAE; border-top:none; padding:20px; line-height:22px;}
.tck .bd span { color:#333333; font-size:14px;}
.tck .items { font-size:16px; font-weight:bolder;}
.tck .bd .button-1 { text-align:right; padding-top:10px;}
.tck .bd .button-1 span { float:left; color:#000; font-weight:normal;}
.red-0 { font-size:15px; color:#FFFFFF; vertical-align:baseline; text-align:center;}
.black_overlay { display: block; position: absolute; top: 0%; left: 0%; bottom:0%; right:0%; width: 100%; height:0px; background-color:#f5f5f5; z-index:1001; -moz-opacity: 0.8; opacity:.80; filter: alpha(opacity=80);}