function validateFormCustom(site_lang)
{
    valid = true;
	var loesungRaw = document.getElementById('verify').value;
	loesung = loesungRaw.toLowerCase();

    if (loesung != "11" )
    {
		if(site_lang == 0)
			var errortext = "Bitte geben Sie die korrekte Summe von 8 + 3 an!";
		else
			var errortext = "Please enter the correct total of 8 + 3!";
			
        alert (errortext);
		document.getElementById('verify').value = "";
		document.getElementById('verify').focus();
		valid = false;
    }
	
/*	var email = document.getElementById('mailformemail').value;

	if(!email.value.match(/^[A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i)){
    		alert('not valid');
	} else {
    	alert('valid');
	}
*/
    return valid;
}