if (document.images) {

/* img1-img9 are the main navigation; present on all pages */

        img1on = new Image();
        img1on.src = "/images/nav_home_on.gif";
        img1off = new Image();
        img1off.src = "/images/nav_home_off.gif"
				
        img2on = new Image();
        img2on.src = "/images/nav_res_on.gif";
        img2off = new Image();
        img2off.src = "/images/nav_res_off.gif"
				
        img3on = new Image();
        img3on.src = "/images/nav_fin_on.gif";
        img3off = new Image();
        img3off.src = "/images/nav_fin_off.gif"
				
        img4on = new Image();
        img4on.src = "/images/nav_props_on.gif";
        img4off = new Image();
        img4off.src = "/images/nav_props_off.gif"
				
        img5on = new Image();
        img5on.src = "/images/nav_about_on.gif";
        img5off = new Image();
        img5off.src = "/images/nav_about_off.gif"
				
        img11on = new Image();
        img11on.src = "/images/snav_buy_on.gif";
        img11off = new Image();
        img11off.src = "/images/snav_buy_off.gif"
				
        img12on = new Image();
        img12on.src = "/images/snav_sell_on.gif";
        img12off = new Image();
        img12off.src = "/images/snav_sell_off.gif"
				
        img13on = new Image();
        img13on.src = "/images/snav_ed_on.gif";
        img13off = new Image();
        img13off.src = "/images/snav_ed_off.gif"
				
        img14on = new Image();
        img14on.src = "/images/snav_cnty_twn_on.gif";
        img14off = new Image();
        img14off.src = "/images/snav_cnty_twn_off.gif"
				
        img15on = new Image();
        img15on.src = "/images/snav_aarea_on.gif";
        img15off = new Image();
        img15off.src = "/images/snav_aarea_off.gif"
				
        img16on = new Image();
        img16on.src = "/images/snav_sell1_on.gif";
        img16off = new Image();
        img16off.src = "/images/snav_sell1_off.gif"
				
        img21on = new Image();
        img21on.src = "/images/btn_props_on.gif";
        img21off = new Image();
        img21off.src = "/images/btn_props_off.gif"
				
}
function imgSwap (imgName,imgFile)  { 
        if (document.images)  {
                document.images[imgName].src = eval (imgFile + ".src");
        }
}