function maxresize(){
window.open("","max","width=400,height=200,left=500,top=400");
}

function chkbewerben () {

  if (document.forms[0].name.value == "") {

      document.getElementById("warning").style.color = "red";
      document.forms[0].name.focus();
      return false;
  }
  if (document.forms[0].vorname.value == "") {

      document.getElementById("warning1").style.color = "red";
      document.forms[0].vorname.focus();
      return false;
  }
  if (document.forms[0].orga.value == "") {

    document.getElementById("warning2").style.color = "red";
    document.forms[0].orga.focus();
    return false;
  }
    if (document.forms[0].work.value == "") {

    document.getElementById("warning3").style.color = "red";
    document.forms[0].work.focus();
    return false;
  }

 if (document.forms[0].email.value.indexOf("@") == -1) {

    document.getElementById("warning4").style.color = "red";
    document.forms[0].email.focus();
    return false;
  }


maxresize();
}



function chkempfehlen () {
 if (document.forms[0].nameEmpfaenger.value == "") {

      document.getElementById("warning").style.color = "red";
      document.forms[0].nameEmpfaenger.focus();
      return false;
  }

  if (document.forms[0].mailEmpfaenger.value.indexOf("@") == -1) {

    document.getElementById("warning1").style.color = "red";
    document.forms[0].mailEmpfaenger.focus();
    return false;
  }

  if (document.forms[0].text.value == "") {

    document.getElementById("warning2").style.color = "red";
    document.forms[0].text.focus();
    return false;
  }

maxresize();
}