function popup(theURL,popupWidth,popupHeight){
	var myURL = (theURL);
	var popupName = 'mySite';
	var popupX = (screen.availWidth)? ((screen.availWidth - popupWidth) / 2): 20;
	var popupY = (screen.availHeight)? ((screen.availHeight - popupHeight) / 3):20;
	var details = 'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=yes,resizable=1,width='+popupWidth+',height='+popupHeight+',top='+popupY+',left='+popupX;
	mypopup = window.open(myURL,popupName,details);
	mypopup.focus();
}