function CheckValidUrl(strUrl)
{
        //var RegexUrl = /http:\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/
        var RegexUrl = /http:\/\/[A-Za-z0-9\.-]{3,}\.[A-Za-z]{2,3}\//
        return RegexUrl.test(strUrl);
}