<head>
<base traget="_blank">
<script language="JavaScript" type="text/JavaScript" src="http://union.3721.com/ads/ads.js?id=xxxxx&ads=3&img_url=http%3A%2F%2Funion.3721.com%2Fimages%2FYIM468-60.swf&img_type=1&img_h=60&img_w=468"
</script>
</head>
<base traget="_blank">
<script language="JavaScript" type="text/JavaScript" src="http://union.3721.com/ads/ads.js?id=xxxxx&ads=3&img_url=http%3A%2F%2Funion.3721.com%2Fimages%2FYIM468-60.swf&img_type=1&img_h=60&img_w=468"
</script>
</head>
function OpenWindow(){
window.open(...);
}