function placeCursor()
{
  var forms = document.getElementsByTagName('form');

  for(i = 0; i < forms.length; i++)
  {
    var form = forms[i];
    var elements = form.elements;

    for(j = 0; j < elements.length; j++)
    {
      var element = elements[j];

      if( element.value == '' && element.type != 'hidden' )
      {
        element.focus();
        return;
      }
    }
  }
}

window.onload = placeCursor;