/**
 * check_select is for control if selected item has value 
 * created by Ondrej Letacek <Ondrej@nestdesign.com> 
 **/

  function check_select(select_id,message){
    myselect = document.getElementById(select_id);
    if(myselect){
      if (myselect.options[myselect.selectedIndex].value != ''){
        return true;        
      }
    }        
    alert(message);
    return false;
  }