function checkUsername (strng) {
 var error = "";
 if (strng == "") {
    error = "You didn't enter a name.\n";
 }
return error;    
}

function checkEmail (strng) {
var error="";
if (strng == "") {
   error = "You didn't enter an email address.\n";
}

    var emailFilter=/^.+@.+\..{2,3}$/;
    if (!(emailFilter.test(strng))) { 
       error = "Please enter a valid email address.\n";
    }
    else {
//test email for illegal characters
       var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/
         if (strng.match(illegalChars)) {
          error = "The email address contains illegal characters.\n";
       }
    }
return error;    
}


// phone number - strip out delimiters and check for 10 digits



function checkWholeForm() {
    var valid = true;
    var why = "";
    //why += checkUsername(document.gbform.name.value);
	why += checkEmail(document.gbform.email.value);

	if (why != "") {
       alert(why);
       valid = false;
    }
return valid;
}