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