function check_email()
{
        var emailAddress = document.getElementById("Email")
        if (emailAddress.value =='')
        {
        emailAddress.focus();
        alert('Please enter your email address.')
        return false;
        }

        if (emailAddress.value !='')
        {
                var valid = "."
                var valid2 = "@"
                var ok = "yes";
                var temp;
                
                temp = "" + emailAddress.value.substring(0,100);
                temp = temp.toLowerCase()
                
                        if (temp.indexOf(valid) == "-1") ok = "no";
                        if (temp.indexOf(valid2) == "-1") ok = "no";
                
                if (ok == "no") 
                {
                alert('Please enter a valid email address.');
                emailAddress.focus();
                emailAddress.select();
                return false;
                }
        }
//document.ListServ.submit();
}

function check_emailmultiple()
{
		var checkFound = false;
		for (var counter=0; counter < document.ListServ.length; counter++) {
		if ((document.ListServ.elements[counter].name == "group") && (document.ListServ.elements[counter].checked == true)) {
		checkFound = true;
		}
		}
		
		if (checkFound != true) {
		alert ("Please select at least one mailing list.");
		return false;
		}
 

		var emailAddress = document.getElementById("Email")
        if (emailAddress.value =='')
        {
        emailAddress.focus();
        alert('Please enter your email address.')
        return false;
        }

        if (emailAddress.value !='')
        {
                var valid = "."
                var valid2 = "@"
                var ok = "yes";
                var temp;
                
                temp = "" + emailAddress.value.substring(0,100);
                temp = temp.toLowerCase()
                
                        if (temp.indexOf(valid) == "-1") ok = "no";
                        if (temp.indexOf(valid2) == "-1") ok = "no";
                
                if (ok == "no") 
                {
                alert('Please re-enter email address, format is not valid.');
                emailAddress.focus();
                emailAddress.select();
                return false;
                }
        }
//document.ListServ.submit();
}