function validate_contact ( )
	{
		var nev  = document.getElementById('nev');
 	    var email  = document.getElementById('email');
 	    var uzenet  = document.getElementById('uzenet');
 	    var telefon  = document.getElementById('telefon');

       error = "";

		if (nev.value=='')
			{
			error = error + ('- Name\n');
			};

		if (email.value=='')
			{
			error = error + ('- E-mail address\n');
			};

/*		if (telefon.value=='')
			{
			error = error + ('- Telephone number\n');
			};
*/
		if (uzenet.value=='')
			{
			error = error + ('- Message body\n');
			};
			
		if  (error != "")
			{
				error = "Please fill in these fields:\n\n" + error;
				alert ( error );
				return false;
			}
	}