function checkEmail(field) {
	    if (field.value) {
          var usr = "([a-zA-Z0-9][a-zA-Z0-9_.-]*|\"([^\\\\\x80-\xff\015\012\"]|\\\\[^\x80-\xff])+\")";
          var domain = "([a-zA-Z0-9][a-zA-Z0-9._-]*\\.)*[a-zA-Z0-9][a-zA-Z0-9._-]*\\.[a-zA-Z]{2,5}";
          var regex = "^"+usr+"\@"+domain+"$";
          var myrxp = new RegExp(regex);
          var check = (myrxp.test(field.value));
          if (check!=true) {return false;}
    			else {return true;}
			}
	 }
function chkFormularNL(obj)
{
 if (!obj.email){alert('Interner Fehler,Feld email');return false;}	
	if (!checkEmail(obj.email)) {
	  alert('E-Mail Adresse nicht angegeben oder falsch!');
		obj.email.focus();
		return false;
	}
	return true;
}