if (document.images)
   {
     studiotourdown= new Image(101,52);
     studiotourdown.src="images/menugraphics/studiotourdown.gif";

     studiotourup= new Image(101,52);
     studiotourup.src="images/menugraphics/studiotourup.gif";  

     staffdown= new Image(53,52);
     staffdown.src="images/menugraphics/staffdown.gif";

     staffup= new Image(53,52);
     staffup.src="images/menugraphics/staffup.gif";

     clientlistdown= new Image(90,52);
     clientlistdown.src="images/menugraphics/clientlistdown.gif";

     clientlistup= new Image(90,52);
     clientlistup.src="images/menugraphics/clientlistup.gif";  

     audiosamplesdown= new Image(127,52);
     audiosamplesdown.src="images/menugraphics/audiosamplesdown.gif";

     audiosamplesup= new Image(127,52);
     audiosamplesup.src="images/menugraphics/audiosamplesup.gif";  

     contactdown= new Image(73,52);
     contactdown.src="images/menugraphics/contactdown.gif";

     contactup= new Image(73,52);
     contactup.src="images/menugraphics/contactup.gif";  

     directionsdown= new Image(91,52);
     directionsdown.src="images/menugraphics/directionsdown.gif";

     directionsup= new Image(91,52);
     directionsup.src="images/menugraphics/directionsup.gif";  

     links1down= new Image(55,52);
     links1down.src="images/menugraphics/linksdown.gif";

     links1up= new Image(55,52);
     links1up.src="images/menugraphics/linksup.gif";  
   }

function down(imgName)
 {
   if (document.images)
    {
      imgDown=eval(imgName + "down.src");
      document[imgName].src= imgDown;
    }
 }

function up(imgName)
 {
   if (document.images)
    {
      imgUp=eval(imgName + "up.src");
      document[imgName].src= imgUp;
    }
 }