function selectAll(selForm) {
  var formularz = selForm.form;
  var i = 0;
  for (i = 0; i<formularz.length; i++){
    if (formularz[i].type == 'checkbox' && formularz[i].name != 'checkAll'){
      formularz[i].checked = selForm.checked;
    }
  }
} 


function rollover(img_name, img_src)
   {
   document[img_name].src = img_src;
   }