function checkEnqForm(ExhibitorEnquiry) {
	var why = "";

//		why += isEmpty(ExhibitorEnquiry.title.value, "TITLE");
//		if (why != "") {
//			alert(why);
//			ExhibitorEnquiry.title.focus();
//			return false;
//		}
		why += isEmpty(ExhibitorEnquiry.name.value, "NAME");
		if (why != "") {
			alert(why);
			ExhibitorEnquiry.name.focus();
			return false;
		}
		why += isEmpty(ExhibitorEnquiry.tel.value, "TELEPHONE");
		if (why != "") {
			alert(why);
			ExhibitorEnquiry.tel.focus();
			return false;
		}
		why += checkEmail(ExhibitorEnquiry.email.value, "EMAIL ADDRESS");
		if (why != "") {
		alert(why);
		ExhibitorEnquiry.email.focus();
		return false;
		}
		why += isEmpty(ExhibitorEnquiry.company.value, "COMPANY");
		if (why != "") {
			alert(why);
			ExhibitorEnquiry.company.focus();
			return false;
		}


	return true;
}


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;    
}

// non-empty textbox

function isEmpty(strng, fldName) {
var error = "";
  if (strng.length == 0) {
     error = "The " + fldName + " field has not been filled in.\n"
  }
return error;	  
}