function regexmail(mail) 
{
	var regexist = false;
	var res = false;
 	if(typeof(RegExp) == 'function') 
 	{
		var testregex = new RegExp('abc');
  		if(testregex.test('abc') == true)
  		{
  			regexist = true;
  		}
  	}

	if(regexist == true) 
	{
		reg = new RegExp('^([a-zA-Z0-9\\-\\.\\_]+)(\\@)([a-zA-Z0-9\\-\\.]+)(\\.)([a-zA-Z]{2,4})$');
		res = (reg.test(mail));
  	} 
	else 
  	{
  		res = (mail.search('@') >= 1 && mail.lastIndexOf('.') > mail.search('@') && mail.lastIndexOf('.') >= mail.length-5)
  	}
  	return(res);
}

function sendForm() {
	error = false;
	
	var f = document.kontakt;
	$("Vorname").style.border = "1px #8cbbd9 solid";
	$("Nachname").style.border = "1px #8cbbd9 solid";
	$("Strasse").style.border = "1px #8cbbd9 solid";
	$("PLZ").style.border = "1px #8cbbd9 solid";
	$("Ort").style.border = "1px #8cbbd9 solid";
	$("EMail").style.border = "1px #8cbbd9 solid";
	$("Fehlerhinweis").style.display = "none";
	if (f.Vorname.value == "") {
		$("Vorname").style.border = "1px #902020 solid";
		error = true;
	}
	if (f.Nachname.value == "") {
		$("Nachname").style.border = "1px #902020 solid";
		error = true;
	}
	if (f.Strasse.value == "") {
		$("Strasse").style.border = "1px #902020 solid";
		error = true;
	}
	if (f.PLZ.value == "") {
		$("PLZ").style.border = "1px #902020 solid";
		error = true;
	}
	if (f.Ort.value == "") {
		$("Ort").style.border = "1px #902020 solid";
		error = true;
	}
	if (f.EMail.value == "" || !regexmail(f.EMail.value)) {
		$("EMail").style.border = "1px #902020 solid";
		error = true;
	}
		
	if (error == false) {
		f.submit();	
	} else {
		$("Fehlerhinweis").style.display = "block";
	}
}