if (navigator.appName=="Netscape") {var nav=0;} else {var nav=1;}

                b1 = new Image ();b1.src = "img/b1.gif";
                b1on = new Image();b1on.src = "img/b1_over.gif";
                b2 = new Image ();b2.src = "img/b2.gif";
                b2on = new Image();b2on.src = "img/b2_over.gif";
                b3 = new Image();b3.src = "img/b3.gif";
                b3on = new Image();b3on.src = "img/b3_over.gif";
                b4 = new Image();b4.src = "img/b4.gif";
                b4on = new Image();b4on.src = "img/b4_over.gif";
                b5 = new Image();b5.src = "img/b5.gif";
                b5on = new Image();b5on.src = "img/b5_over.gif";
                b6 = new Image();b6.src = "img/b6.gif";
                b6on = new Image();b6on.src = "img/b6_over.gif";
                b7 = new Image();b7.src = "img/b7.gif";
                b7on = new Image();b7on.src = "img/b7_over.gif";
		b8 = new Image();b8.src = "img/b8.gif";
                b8on = new Image();b8on.src = "img/b8_over.gif";
		b9 = new Image();b9.src = "img/b9.gif";
                b9on = new Image();b9on.src = "img/b9_over.gif";

                var init=1,oldinit=1;
                var n=0,name="",bname="",first=0;

                function on(n) {
                       if (first==1) {off(1);first=0}
                        bname="b"+n;
                        var nn=eval("b"+n+"on");
                        if (nav==0) document.images[bname].src=nn.src;
                        else document.all[bname].src=nn.src
                        }

                function off(n) {
                        bname="b"+n;
                        var nn=eval("b"+n);
                        if (nav==0) document.images[bname].src=nn.src;
                        else document.all[bname].src=nn.src;
                       }