function popup(page,PWidth,PHeight)
{
	popWindow = window.open(page, 'popup1', 'toolbar=0,scrollbars=1,location=0,status=0,menubars=0,resizable=1,width='+PWidth+',height='+PHeight);
	popWindow.window.moveTo((screen.width/2)-(parseInt(PWidth)/2), (screen.height/2)-(parseInt(PHeight)/2));
	popWindow.window.focus();
}