function checkForm(formObj) {

	var regexp = /^[\w\.\-]+@([\w\-]+\.)+[a-zA-Z]+$/;
	var numbers_only = /[^0-9]/g;

	toValidateMail = formObj.epos;

	if (formObj.fullname.value == "") {
		alert('Please fill in your full name');
		formObj.fullname.focus();
		return false;
	}
	
	if (formObj.companyname.value == "") {
		alert('Please fill in your company name');
		formObj.companyname.focus();
		return false;
	}	
	
	if (formObj.tel.value == "") {
		alert('Please fill in your telephone number (including area code)');
		formObj.tel.focus();
		return false;
	}
	
	if (!toValidateMail.value.match(regexp)) {
		alert('Please fill in a valid email address');
		formObj.epos.focus();
		return false;
	}	

	return true;
}