<!--

if (document.images) {
     
  img1on = new Image();
  img1on.src = "images/navigation/home_over.gif"; 
  img2on = new Image();
  img2on.src = "images/navigation/about_over.gif";  
  img3on = new Image();
  img3on.src = "images/navigation/services_over.gif";
  img4on = new Image();
  img4on.src = "images/navigation/contact_over.gif";

  img1off = new Image();
  img1off.src = "images/navigation/home_off.gif"; 
  img2off = new Image();          
  img2off.src = "images/navigation/about_off.gif";
  img3off = new Image();
  img3off.src = "images/navigation/services_off.gif";
  img4off = new Image();
  img4off.src = "images/navigation/contact_off.gif";

}

function imgOn(imgName) {
  if (document.images)
    document[imgName].src = eval(imgName + "on.src");
}
			
function imgOff(imgName) {
  if (document.images)
   document[imgName].src = eval(imgName + "off.src");
}

//-->