function popup(url,w,h){
	
	window.name = "oldPage";
	
	var x = Math.round((document.body.clientWidth/2)-(w/2));
	var y = Math.round((document.body.clientHeight*2/5)-(h/2));
	
	var newpage = window.open(url,"popup","status=0, toolbar=0, location=0, menubar=0, directories=0, resizable=1, scrollbars=0, width="+w+", height="+h+", left="+x+", top="+y);
	if (window.focus) {
		newpage.focus();
	}
	return false;
}