/*
  form.js
*/
window.onload = function ()
{
  document.getElementById('submit').disabled = true;
  addEvent(document.getElementById('name'), 'keyup', check);
  addEvent(document.getElementById('mail'), 'keyup', check);
  addEvent(document.getElementById('telefon'), 'keyup', check);
  addEvent(document.getElementById('text'), 'keyup', check);
}
var check = function ()
{
  if ((document.getElementById('name').value) && (document.getElementById('mail').value) && (document.getElementById('telefon').value) && (document.getElementById('text2').value))
  {
     document.getElementById('submit').disabled = false;
  }
  else document.getElementById('submit').disabled = true;
}