function getObjRef(obj) {
	if (document.getElementById) {
		return document.getElementById(obj);
	}
	else if (document.all) {
		return document.all[obj];
	}
	else {
		return null;
	}
}


function validate(form) {
	var Name = form.callName.value;
	var Email = form.callEmail.value;
	var Job = form.callJob.value;
	var Company = form.callCompany.value;
	var Phone = form.callPhone.value;
	var Interest = form.callInterest.value;
	var emailRegex = /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/;
	
	var passed = true;
	
	if (Name == "") {
		getObjRef("errorName").innerHTML = "<span class=\"error\">Please enter your name</span>";
		passed = false;
	}	else {
		getObjRef("errorName").innerHTML = "";
	}
	if (!Email.match(emailRegex)) {
		getObjRef("errorEmail").innerHTML = "<span class=\"error\">Please enter a valid email address</span>";
		passed = false;
	}	else {
		getObjRef("errorEmail").innerHTML = "";
	}
	if (Job == "") {
		getObjRef("errorJob").innerHTML = "<span class=\"error\">Please enter your job title</span>";
		passed = false;
	}	else {
		getObjRef("errorJob").innerHTML = "";
	}
	if (Company == "") {
		getObjRef("errorCompany").innerHTML = "<span class=\"error\">Please enter your company</span>";
		passed = false;
	}	else {
		getObjRef("errorCompany").innerHTML = "";
	}
	if (Phone == "") {
		getObjRef("errorPhone").innerHTML = "<span class=\"error\">Please enter your telephone number</span>";
		passed = false;
	}	else {
		getObjRef("errorPhone").innerHTML = "";
	}
	if (Interest == "") {
		getObjRef("errorInterest").innerHTML = "<span class=\"error\">Please enter your area of interest</span>";
		passed = false;
	}	else {
		getObjRef("errorInterest").innerHTML = "";
	}

	return passed;
	
}