function refreshCaptcha(){
	var now = new Date();
	document.getElementById('captcha').src='/index.php?id=229&t='+now.getTime();
}

// Hier speichern wir den alte Functionaufruf Ê
var oldSubmit ;

// Aufruf onLoadÊ
function myfunction() {
	var myForm = document.getElementById("mailform");
	oldSubmit = myForm.onsubmit;
	myForm.onsubmit= mySubmit;
 	refreshCaptcha();
}


function mySubmit() {
if (oldSubmit()) {
if (captachanOk()) return true;
else refreshCaptcha();
alert ('Ihre Berechnung ist leider falsch / Unfortunately your calculation is not correct.');
}
return false;
}
var inputOk = false;

var handlerEmailFunc = function(_value) {
//alert(_value.responseText);
inputOk=(_value.responseText.charAt(0)=="1")||(_value.responseText.charAt(1)=="1");
}


var errFunc = function(t) {
	inputOk = false;
}


function captachanOk() {
var url = 'http://www.smst-tubes.com/index.php?id=230';
var value = $("mailformwt_calculating_captcha").value;
new Ajax.Request(url, {
method: 'get',parameters : { code : value },
asynchronous:false,
onSuccess:handlerEmailFunc, onFailure:errFunc
});
return inputOk;
}