function NewsLetterPopUp(URL) {
day = new Date();
id  = day.getTime();
URL = "viewnewsletter.php?id="+URL;
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,width=630,height=500,left = 330,top = 90');");
}