function openwindow(url,iWidth,iHeight)
{
var url;
var iWidth;
var iHeight;
var iTop = (window.screen.availHeight-30-iHeight)/2;
var iLeft = (window.screen.availWidth-10-iWidth)/2;
window.open(url,'','height='+iHeight+',,innerHeight='+iHeight+',width='+iWidth+',innerWidth='+iWidth+',top='+iTop+',left='+iLeft+',toolbar=no,menubar=no,scrollbars=auto,resizeable=no,location=no,status=no');
}