function validate(form)
{
	var form_ok = true;
	var name = form.name.value;
	var email = form.email.value;
	var country = form.country.value;
	var hear = form.hear.value;
	var comments = form.comments.value;


	var alphaExp = /^[a-zA-Z]+$/;
	var emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
	var numberExp = /^[0-9]+$/;


	if(!name)
	{
		form_ok = false;
		alert("Please Enter Your Name.");
		return false;
	}
	
	if(!email)
	{
		form_ok = false;
		alert("Please Enter Your Email.");
		return false;
	}	
	
	if(!email.match(emailExp))
	{
		form_ok = false;
		alert("Please insert your valid email address.");
		return false;
	}

	if(!country)
	{
		form_ok = false;
		alert("Please select a country.");
		return false;
	}

	if(!hear)
	{
		form_ok = false;
		alert("Please select where did your hear about us.");
		return false;
	}
	
	if(!comments)
	{
		form_ok = false;
		alert("Please enter your comments.");
		return false;
	}	
}