// pre-load images
if (document.images) 
{
   img1 = new Image();
   img2 = new Image();
   img3 = new Image();
   img4 = new Image();
   img5 = new Image();
   img6 = new Image();
   img7 = new Image();
   img8 = new Image();
   img9 = new Image();
   img10 = new Image();
   img1.src = "images/fuschia.gif";
   img2.src = "images/olive.gif";  
   img3.src = "images/orange.gif";  
   img4.src = "images/purple.gif";
   img5.src = "images/teal.gif";
   img6.src = "images/caret_fuschia.gif";
   img7.src = "images/caret_olive.gif";
   img8.src = "images/caret_orange.gif";
   img9.src = "images/caret_purple.gif";
   im10.src = "images/caret_teal.gif";

}