if (document.images) {

  
    hebon = new Image(155, 24);
    hebon.src = "img/hebon.gif";
  
  heboff = new Image(155, 24);
    heboff.src = "img/heb.gif"; 

}



function ItemOn (iname)
{

    if (document.images) {
    
    imgOn = eval(iname + "on.src");

    
    document [iname].src = imgOn;

    }

}



function ItemOff (iname)
{

    if (document.images) {

        imgOff = eval(iname + "off.src");
     

   document [iname].src = imgOff;

    }

}