<!--//
browserName = navigator.appName;
browserVersion = parseFloat(navigator.appVersion); 
if (browserName == "Netscape" && browserVersion >= 3.0)
        {
        roll = 'true';
        }
else if (browserName == "Microsoft Internet Explorer" && browserVersion >= 3.0)
       {
        roll = 'true';
        }
else
        {
        roll = 'false';
        }
        function switchEm(img,ref)
        {
                if (roll == 'true')
                       {
                       document.images[img].src = ref;
                       }
        }
function switch2ofEm(img1,ref1,img2,ref2)
{
                if (roll == 'true')
                        {
                        document.images[img1].src = ref1;
                        document.images[img2].src = ref2;
                       }

}       
//-->