function popUp(URL,w,h) {
	day = new Date();
	id = day.getTime();
	if (w>0) width=w; else width=640;
	if (h>0) height=h; else height=480;
	eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,width=" + width + ",height=" + height + ",left = 320,top = 144');");
}