function isNum(passedVal) {
	if (passedVal == "") {
		return false;
	}
	for (i=0; i<passedVal.length; i++) {
		if (passedVal.charAt(i) < "0") {
			return false;
		}
		if (passedVal.charAt(i) > "9") {
			return false;
		}
	}
	return true;
}

function validMobile(inMobile) {
	if (inMobile == "") {
		return true;
	}
	if (isNum(inMobile)) {
		return true;
	}
	return false;
}

function validEmail(email) {
	invalidChars = "/:,;";
	
	if (email == "") {
		return false;
	}
	for (i=0; i<invalidChars.length; i++) {
		badChar = invalidChars.charAt(i);
		if (email.indexOf(badChar,0)>-1) {
			return false;
		}
	}
	atPos = email.indexOf("@",1);
	if (atPos == -1) {
		return false;
	}
	if (email.indexOf("@",atPos+1)>-1) {
		return false;
	}
	periodPos = email.indexOf(".",atPos);
	if (periodPos == -1){
		return false;
	}
	if (periodPos+3 > email.length) {
		return false;
	}
	return true;
}

function submitIt(mailList) {
	titleSelect = mailList.title.selectedIndex;
	if (mailList.title.options[titleSelect].value == "") {
		alert("Please enter your title");
		return false;
	}
	if (mailList.FirstName.value == "") {
		alert("Please enter your first name");
		return false;
	}
	if (mailList.LastName.value == "") {
		alert("Please enter your last name");
		return false;
	}
	if (mailList.EmailAddress.value == "") {
		alert("Please enter your email address");
		return false;
	} 
	if (!validEmail(mailList.EmailAddress.value)) {
		alert("You have entered an incorrect email address")
		return false;
	}
	return true;
}