function validate(){
	
	var name = document.contact.name.value;
	var email = document.contact.email.value;
	var phone = document.contact.phone.value;
	var comment = document.contact.comment.value;
	
	if(name == ""){
	alert('Please enter a name');
	document.contact.name.focus();
	return false;
	}
	
	if(-1 == email.indexOf("@")){
	alert('Please enter a valid email');
	document.contact.email.focus();
	return false;
	}
	
	if(phone == ""){
	alert('Please enter a phone number');
	document.contact.phone.focus();
	return false;
	}
	
	if(comment == ""){
	alert('Please enter a comment');
	document.contact.comment.focus();
	return false;
	}
	
}