if (document.images) {

            Limg1on = new Image();

            Limg1on.src = "images/nav_hom_b.gif";


            Limg2on = new Image();

            Limg2on.src = "images/nav_cur_b.gif";


            Limg3on = new Image();

            Limg3on.src = "images/nav_pro_b.gif";


            Limg4on = new Image();

            Limg4on.src = "images/nav_fac_b.gif";


            Limg5on = new Image();

            Limg5on.src = "images/nav_pract_b.gif";


            Limg6on = new Image();

            Limg6on.src = "images/nav_faq_b.gif";


			Limg7on = new Image();

            Limg7on.src = "images/nav_con_b.gif";


			Limg8on = new Image();

            Limg8on.src = "images/nav_res_b.gif";






            Limg1off = new Image();

            Limg1off.src = "images/nav_hom_a.gif";


            Limg2off = new Image();

            Limg2off.src = "images/nav_cur_a.gif";


            Limg3off = new Image();

            Limg3off.src = "images/nav_pro_a.gif";


            Limg4off = new Image();

            Limg4off.src = "images/nav_fac_a.gif";


            Limg5off = new Image();

            Limg5off.src = "images/nav_pract_a.gif";


            Limg6off = new Image();

            Limg6off.src = "images/nav_faq_a.gif";


            Limg7off = new Image();

            Limg7off.src = "images/nav_con_a.gif";


            Limg8off = new Image();

            Limg8off.src = "images/nav_res_a.gif";



        }


function imgOn(imgName) {

        if (document.images) {

            document[imgName].src = eval(imgName + "on.src");

        }

}


function imgOff(imgName) {

        if (document.images) {

            document[imgName].src = eval(imgName + "off.src");

        }

}