// JavaScript Document
function validateForm()
{
	var formSubmit = false;
	var form = document.forms[0];
	form.submitbtn.disabled = true;
	
	var regex = /^[a-zA-Z][\w\.-]*[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$/;
	
	if(form.firstname.value.length > 0 && form.lastname.value.length > 0 && regex.test(form.email.value) && form.message.value.length > 0)
		formSubmit = true;
	else
	{
		alert("Please fill in all the required fields with a correct email address.");
		form.submitbtn.disabled = false;
	}
		
	return formSubmit;
}