var explorertype=-1;
    function detectExplorerType()
    {
        //Detect Firefox
        if(navigator.userAgent.indexOf("Firefox")!=-1)
        {
            var versionindex=navigator.userAgent.indexOf("Firefox")+8
            if (parseInt(navigator.userAgent.charAt(versionindex))>=1)
            {
                explorertype=0;
            }
        }
        //Detect IE5.5+
        if (navigator.appVersion.indexOf("MSIE")!=-1)
        {
            version=0
            temp=navigator.appVersion.split("MSIE")
            version=parseFloat(temp[1])
            if (version>=5.5)
            {
                explorertype=1;
            }
        }

        if (/Opera[\/\s](\d+\.\d+)/.test(navigator.userAgent))
        { //test for Opera/x.x or Opera x.x (ignoring remaining decimal places);
            var oprversion=new Number(RegExp.$1) // capture x.x portion and store as a number
            if (oprversion>=10)
            {
//                document.write("You're using Opera 10.x or above")
                explorertype=2;
            }
            else if (oprversion>=9)
            {
//                document.write("You're using Opera 9.x")
                explorertype=2;
            }
            else if (oprversion>=8)
            {
//              document.write("You're using Opera 8.x")
                explorertype=2;
            }
            else if (oprversion>=7)
            {
//                document.write("You're using Opera 7.x")
                explorertype=2;
            }
            else
            {
//                document.write("n/a")
                explorertype=2;
            }
        }
//        alert("load on init"+explorertype);
    }


    function detectVersion()
    {
        version = parseInt(navigator.appVersion);
        return version;
    }

    function detectOS()
    {
        if(navigator.userAgent.indexOf('Win') == -1)
        {
            OS = 'Macintosh';
        }
        else
        {
            OS = 'Windows';
        }
        return OS;
    }

    function detectBrowser()
    {
        if (navigator.appName.indexOf('Netscape') == -1)
        {
            browser = 'IE';
        }
        else
        {
            browser = 'Netscape';
        }
        return browser;
    }