if (document.images)
   {
     image_off= new Image(215,260);
     image_off.src="../images/HorseSense/ultimate_hs215.jpg";  

     image1= new Image(215,260);
     image1.src="../images/HorseSense/white_knight_hs215.jpg";
     image2= new Image(215,260);
     image2.src="../images/HorseSense/emerald_black_hs215.jpg";  
     image3= new Image(215,260);
     image3.src="../images/HorseSense/ultimate_hs215.jpg";   
     image4= new Image(215,260);
     image4.src="../images/HorseSense/solution_hs215.jpg";  
   }

function change1(picName,imgName)
 {
   if (document.images)
    {
      imgOn=eval(imgName + ".src");
      document[picName].src= imgOn;
    }
 }