function popUp(URL,w,h) {
	day = new Date();
	id = day.getTime();
	sw = screen.width;
	sh = screen.height;
	l = (sw-w)/2;
	t = (sh-h)/2;
	eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=1,menubar=0,resizable=1,width='+w+',height='+h+',left='+l+',top='+t+'');");
}