//prüfen ob city leer ist
function checkInput()
{
	var fehler = "";
	var strFehler = "";
	var TF = document.forms.contact_email;
	//contact_consigner
	if(TF.contact_consigner.value == "")
	{
	fehler += "1";
	document.getElementById('contact_consigner').className = 'w75 inputselect error';
	}
	if(TF.contact_consigner.value != "")
	{
	//
		function validEmail(email) {
			var strReg = "^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$";
			var regex = new RegExp(strReg);
			return(regex.test(email));
		}
		if (!validEmail(TF.contact_consigner.value)) {
			fehler += "1";
			document.getElementById('contact_consigner').className = 'w75 inputselect error';
		}
	//
		if (validEmail(TF.contact_consigner.value)) {
			document.getElementById('contact_consigner').className = 'w75 inputselect mandatory';
		}
	
	}
	//betreff
		if(TF.contact_betreff.value == ""){
			fehler += "1";
			document.getElementById('contact_betreff').className = 'w75 inputselect error';
		}
		if(TF.contact_betreff.value != ""){
			document.getElementById('contact_betreff').className = 'w75 inputselect mandatory';
		}
	//E-Mail Text
		if(TF.contact_text.value == ""){
			fehler += "1";
			document.getElementById('contact_text').className = 'w100 inputselect error';
		}
		if(TF.contact_text.value != ""){
			document.getElementById('contact_text').className = 'w100 inputselect mandatory';
		}
	//ende
	if (fehler != ""){
	showDialog('Meldung', 'Sie müssen alle Pflichtfelder ausfüllen<input id="problembutton" type="button" value="OK" onclick="hideDialog();" >','problem');
	return false;
	}
	if (fehler == ""){
		return true;
	}
}