var MyWin;
  appN=navigator.appName;
  appV=navigator.appVersion;
  IE=(appN.indexOf("Microsoft")>=0) ? true : false;
  NN=(appN.indexOf("Netscape")>=0) ? true : false;
  PM=(navigator.appVersion.indexOf("Macintosh")>=0) ? true : false;
  document.onmouseover = mouseOver; 
  document.onmouseout = mouseOut; 
  document.onclick = mouseClick;

  function mouseOver(e){
   obj = (NN) ? e.target : window.event.srcElement;
   objname = obj.id; 
    if ((objname.match(/but/))){     
     document.all(objname).src = "/img/" + objname + "_new_o.jpg";
    } 
  }

  function mouseOut(e){
   obj = (NN) ? e.target : window.event.srcElement;
   objname = obj.id; 
    if ((objname.match(/but/))){     
     document.all(objname).src = "/img/" + objname + "_new.jpg";
    }
  }
 
function mouseClick(e){

}