addLoadEvent(contactDOM);

function validateContact(theForm) {

	if ((theForm.last_name.value=="")||(theForm.first_name.value=="")||(theForm.email.value=="")) {
		alert("Please, enter your name and e-mail address.");
		return false;
	}
	if (!validateEmail(theForm.email.value)) {
		alert("Please, enter a valid e-mail address.");
		return false;
	}
	theForm.sc.value=1;
	return true;
}

function contactDOM() {
	var frmContact = document.getElementById("contactform");
	
	if(frmContact) {
		frmContact.onsubmit = function () { 
			return validateContact(frmContact); 
		}
		
		var btnSubmitContact = document.getElementById("buttonSubmitContact");
		if(btnSubmitContact) {
			btnSubmitContact.onclick = function () {
				if(validateContact(frmContact)) {
					frmContact.submit();
				}
				return false;
			}	
		}
	}	
}