function popUp(URL,width,height) {
var winl = (screen.width - width) / 2;
var wint = (screen.height - height) / 2;
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,top="+wint+",left="+winl+",statusbar=0,menubar=0,resizable=0,width="+width+",height="+height+"');");
}