function swapImage(imgN,imgU) {
  if(document.images)document.images[imgN].src=imgU;
}

function Jump(theSelect){
  selindex = theSelect.selectedIndex
  selvalue = theSelect.options[selindex].value
  window.location.href = selvalue
}

function smazat() {
  if (confirm('Opravdu smazat?')) return true;
  else return false;
}

function validate(vstup) {
  if(!CheckEmptyField(theForm.polozka,"Vyplňte prosím pole jméno.") ) return false;
}