if (document.images)
   {
     pic1on= new Image(353,24);
     pic1on.src="images/nav/home_on.gif";

     pic1off= new Image(353,24);
     pic1off.src="images/nav/home_off.gif";

		 pic2on= new Image(353,21);
     pic2on.src="images/nav/siteplan_on.gif";

     pic2off= new Image(353,21);
     pic2off.src="images/nav/siteplan_off.gif";

		 pic3on= new Image(353,24);
     pic3on.src="images/nav/pictures_on.gif";

     pic3off= new Image(353,24);
     pic3off.src="images/nav/pictures_off.gif";

		 pic4on= new Image(353,23);
     pic4on.src="images/nav/map_on.gif";

     pic4off= new Image(353,23);
     pic4off.src="images/nav/map_off.gif";

		 pic5on= new Image(353,20);
     pic5on.src="images/nav/reqinfo_on.gif";

     pic5off= new Image(353,20);
     pic5off.src="images/nav/reqinfo_off.gif";

 		 pic6on= new Image(353,21);
     pic6on.src="images/nav/links_on.gif";

     pic6off= new Image(353,21);
     pic6off.src="images/nav/links_off.gif";

 		 pic7on= new Image(353,21);
     pic7on.src="images/nav/lodging_on.gif";

     pic7off= new Image(353,21);
     pic7off.src="images/nav/lodging_off.gif";

		 pic8on= new Image(353,25);
     pic8on.src="images/nav/builders_on.gif";

     pic8off= new Image(353,25);
     pic8off.src="images/nav/builders_off.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;
    }
 }