//function checkvalid() {
//    if (emptyField(document.getElementById("ctl00_txtjoin"))) {
//        alert("Please Enter Your Email_Id");
//        document.getElementById("ctl00_txtjoin").focus;
//        return false;
//    }
//    if (!validEmailId(document.getElementById("ctl00_txtjoin").value)) {
//        alert("Please Enter Valid Email_Id");
//        document.getElementById("ctl00_txtjoin").focus;
//        return false;
//    }
//    var win = window.open('reviewmessage.aspx', null, 'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=yes,width=350,height=175,top=10,left=10', 'true');
//    win.focus();
//}


function checkvalid(Email, txtjoin,sver)
 {

     if (emptyField(Email))
     {
        alert('Please enter Email Id');
        Email.focus();
        return false;
     }
     if (!validEmailId(Email.value))
     {
        alert('Please Enter Valid Email id');
        Email.focus();
        return false;
     }
    // alert(sver);
     if (txtjoin == 'J') {

         var win = window.open( sver + 'reviewmessage.aspx?email=' + Email.value, null, 'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=yes,width=550,height=300,top=10,left=10', 'true');
         win.focus();
         return false;
     }

     if (txtjoin == 'U') {

         var win = window.open(sver + 'unsubscribe.aspx?email=' + Email.value, null, 'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=yes,width=550,height=300,top=10,left=10', 'true');
         win.focus();
         return false;
     }
     
}



//opensmallwindow('leavemessage.aspx', 500, 500, 100, 300)