addEvent(window, 'load', popupcenterinit);

	var pageWidth  = 770;
	var pageHeight = 670;
	function popupcenter(pageURL){
		var scW = screen.availWidth ? screen.availWidth : screen.width;
		var scH = screen.availHeight ? screen.availHeight : screen.height;
		var pageL = (parseInt(scW) - parseInt(pageWidth)) / 2;
		var pageT = (parseInt(scH) - parseInt(pageHeight)) / 2;
		var pageWin = window.open(pageURL,'_blank','scrollbars=no,resizable=no,width='+pageWidth+',height='+pageHeight+',left='+pageL+',top='+pageT);
	}

	function popupcenterinit(){
		var tags=document.getElementsByTagName("a");
		for(i=0;i<tags.length;i++){
			tag=tags[i];
			if(tag.className=="popupcenter"){
				tag.href="javascript:popupcenter('" + tag.href + "');";
				tag.target="";
			}
		}
	}