function validate()
{
	var gt = document.myForm;
	var emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
	
	 if (gt.name.value == "" )
	{
		alert("Vul uw naam!");
		gt.name.focus();
		return false;
	}
 
	else if (!gt.email.value.match(emailExp)){
		alert("Vul Correct e-mail");
		gt.email.focus();
		return false;
	}
	
	else if (gt.telefoon.value == "" )
	{
		alert("Vul uw telefoon!");
		gt.telefoon.focus();
		return false;
	}
	
	else if (gt.comment.value == "" )
	{
		alert("Vul uw comment!");
		gt.comment.focus();
		return false;
	}
	 
	 
 }