function check_mailform_data(){
	
	var mail_name = document.mailform.mail_name.value;
	var mail_surname = document.mailform.mail_surname.value;
	var mail_email = document.mailform.mail_email.value;
	var mail_comment = document.mailform.mail_comment.value;
	var code = document.mailform.code.value;
	
	var checked = true;
	
	if (mail_name.length==0)
	{
		document.mailform.mail_name.style.borderColor="red";
		checked = false;
	}
	
	if (mail_surname.length<3)
	{
		document.mailform.mail_surname.style.borderColor="red";
		checked = false;
	}
	
	if (mail_email.length<2)
	{
		document.mailform.mail_email.style.borderColor="red";
		checked = false;
	}
	
	if (mail_comment.length<4)
	{
		document.mailform.mail_comment.style.borderColor="red";
		checked = false;
	}
	
	if (code.length<4)
	{
		document.mailform.code.style.borderColor="red";
		checked = false;
	}
	
	if (checked==true){
		document.mailform.method = "post";
		document.mailform.action = "index.php?module=kontakt&headline=KONTAKT&id=27&lang=de";
		document.mailform.submit();
	} else {
		alert("Bitte ergänzen Sie die rot makierten Felder")
	}

	return checked;
}