if (document.images) 
{
    img1 = new Image();
	img2 = new Image();
	img3 = new Image();
	img4 = new Image();
    img1.src = "/images/buttons/button_bgetaquotesmall-over.gif";
  	img2.src = "/images/buttons/navbar/tab_lhs-on.gif";
	img3.src = "/images/buttons/navbar/tab_rhs-on.gif";
	img4.src = "/images/buttons/button_wgetaquoteshadow-over.gif";
}