var myWin;
function popup(location,width,height) {
	scrollbars = 1;
	status = 1;
	LeftPosition = (screen.width-width) / 2;
	TopPosition = (screen.height-height) / 2;
	attributes = 'scrollbars='+scrollbars+'toolbar=0,location=0,directories=0,status='+status+',menubar=0,resizable=no,height='+height+',width='+width+',top='+TopPosition+',left='+LeftPosition;
	myWin = window.open(location, 'popup', attributes)
	myWin.focus();
	return false;
}