// Init vars
                var browser = "old";
                var bName = navigator.appName;
                var bVersion = parseInt(navigator.appVersion);
                var itsmac = (navigator.appVersion.indexOf("MAC") != -1);
                
                if (itsmac) {
                                        var platform = "Mac";
                                        }
                if (!itsmac)
                                        {
                                        var platform = "NotMac";
                                        }
                
                
                // check for Netscape
                if (bName == "Netscape")
                        {
                        browser = "ns" + bVersion;
                        }
                        else
                        {
                        // check for MSIE
                        if (bName == "Microsoft Internet Explorer")
                                {
                                if (bVersion >= 4)
                                        {
                                browser = "ie" + bVersion;
                                    }
                                        else
                                        {
                                browser = "ie3";
                                }
                        }
                }
        
        

        // Implement browser specific Style sheets
        if (bName == "Microsoft Internet Explorer") { 
                document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="/includes/vis_ie.css" TITLE="Global">'); 
        }
        else if (bName == "Netscape") {
                document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="/includes/vis_ns.css" TITLE="Global">');
        }
        else {
                document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="/includes/vis_ie.css" TITLE="Global">'); 
        }