if (document.images)
{
	 galleryon= new Image(100,20);
	 galleryon.src="gallery1.gif";

	 galleryoff= new Image(100,20);
	 galleryoff.src="gallery.gif";
	 
	 linuxon= new Image(100,20);
	 linuxon.src="linux1.gif";
	 
	 linuxoff= new Image(100,20);
	 linuxoff.src="linux.gif";
	 
	 linkson= new Image(100,20);
	 linkson.src="links1.gif";
	 	 
	 linksoff= new Image(100,20);
	 linksoff.src="links.gif";
	 
	 stuffon= new Image(100,20);
	 stuffon.src="stuff1.gif";

	 stuffoff= new Image(100,20);
	 stuffoff.src="stuff.gif";

         nexton= new Image(100,20);
	 nexton.src="next1.gif";

         nextoff= new Image(100,20);
	 nextoff.src="next.gif";

         previouson= new Image(100,20);
	 previouson.src="previous1.gif";

	 previousoff= new Image(100,20);
	 previousoff.src="previous.gif";

	
}
function lightup(imgName)
 {
   if (document.images)
    {
      imgOn=eval(imgName + "on.src");
      document[imgName].src= imgOn;
    }
 }

function turnoff(imgName)
 {
   if (document.images)
    {
      imgOff=eval(imgName + "off.src");
      document[imgName].src= imgOff;
    }
 }