function addEngine(){
	var br=new Array(4);
	br=getBrowser();

	if((br[0]=="msie") && (getMajorVersion(br[1]) >= 7)) {
		window.external.AddSearchProvider("http://ezinearticles.com/ssp/ezinearticles.xml");
	}else if((br[0]=="firefox") && (getMajorVersion(br[1]) >= 2)) {
		window.sidebar.addSearchEngine(
            "http://ezinearticles.com/ssp/ezinearticles.xml",  /* engine URL */
            "http://ezinearticles.com/ssp/ezinearticles.gif",  /* icon URL */
            "EzineArticles",  					                      /* engine name */
            "General" );
	}else if((br[0]=="firefox") && (parseFloat(br[1]) >= 1.5)) {
		window.sidebar.addSearchEngine(
            "http://ezinearticles.com/ssp/ezinearticles.src",  /* engine URL */
            "http://ezinearticles.com/ssp/ezinearticles.gif",  /* icon URL */
            "EzineArticles", 	              					      /* engine name */
            "General" );
	}else {
		alert('Sorry, your browser is not supported');
	}
}

function getBrowser(obj) {
    var b=new Array("unknown", "unknown", "unknown", "unknown");

    (isEmpty(obj) ? brs=navigator.userAgent.toLowerCase() : brs=obj);

    if (brs.search(/opera[\/\s](\d+(\.?\d)*)/) != -1) {
    // Opera
        b[0]="opera";
        b[1]=brs.match(/opera[\/\s](\d+(\.?\d)*)/)[1];
        b[2]="opera";
        b[3]=b[1];
        return b;
    } else if (brs.search(/myie2/) != -1) {
    // MyIE2
        b[0]="myie2";
        b[2]="msie";
        b[3]=brs.match(/msie\s(\d+(\.?\d)*)/)[1];
        return b;
    } else if (brs.search(/msn\s(\d+(\.?\d)*)/) != -1) {
    // MSN Explorer
        b[0]="msn";
        b[1]=brs.match(/msn\s(\d+(\.?\d)*)/)[1];
        b[2]="msie";
        b[3]=getMSIEVersion();
        return b;
    } else if (brs.search(/msie\s(\d+(\.?\d)*)/) != -1) {
    // MS Internet Explorer
        b[0]="msie";
        b[1]=getMSIEVersion();
        b[2]="msie";
        b[3]=b[1];
        return b;
	} else if (brs.search(/konqueror[\/\s](\d+([\.-]\d)*)/) != -1) {
    // Konqueror
        b[0]="konqueror";
        b[1]=brs.match(/konqueror[\/\s](\d+([\.-]\d)*)/)[1];
        b[2]="khtml";
        return b;
    } else if (brs.search(/safari\/(\d)*/) != -1) {
    // Safari
        b[0]="safari";
        b[1]=brs.match(/safari\/(\d+(\.?\d*)*)/)[1];
        b[2]="khtml";
        b[3]=brs.match(/applewebkit\/(\d+(\.?\d*)*)/)[1];
        return b;
    } else if (brs.search(/netscape6[\/\s](\d+([\.-]\d)*)/) != -1) {
    // Netscape 6.x
        b[0]="netscape";
        b[1]=brs.match(/netscape6[\/\s](\d+([\.-]\d)*)/)[1];
        b[2]="gecko";
        b[3]=getGeckoVersion();
        return b;
    } else if (brs.search(/netscape\/(7\.\d*)/) != -1) {
    // Netscape 7.x
        b[0]="netscape";
        b[1]=brs.match(/netscape\/(7\.\d*)/)[1];
        b[2]="gecko";
        b[3]=getGeckoVersion();
        return b;
    } else if (brs.search(/firefox[\/\s](\d+([\.-]\d)*)/) != -1) {
    // Firefox
        b[0]="firefox";
        b[1]=brs.match(/firefox[\/\s](\d+([\.-]\d)*)/)[1];
        b[2]="gecko";
        b[3]=getGeckoVersion();
        return b;
    } else if (brs.search(/firebird[\/\s](\d+([\.-]\d)*)/) != -1) {
    // Firebird
        b[0]="firebird";
        b[1]=brs.match(/firebird[\/\s](\d+([\.-]\d)*)/)[1];
        b[2]="gecko";
        b[3]=getGeckoVersion();
        return b;
    } else if (brs.search(/netscape4\/(\d+([\.-]\d)*)/) != -1) {
    // Netscape 4.x
        b[0]="netscape";
        b[1]=brs.match(/netscape4\/(\d+([\.-]\d)*)/)[1];
        b[2]="mozold";
        b[3]=b[1];
        return b;
    } else if ( (brs.search(/mozilla\/(4.\d*)/) != -1) && (brs.search(/msie\s(\d+(\.?\d)*)/) == -1) ) {
        b[0]="netscape";
        b[1]=brs.match(/mozilla\/(4.\d*)/)[1];
        b[2]="mozold";
        b[3]=b[1];
        return b;
    } else if ((brs.search(/mozilla\/5.0/) != -1) && (brs.search(/gecko\//) != -1)) {
    // Mozilla Seamonkey
        b[0]="mozsea";
        b[1]=brs.match(/rv\x3a(\d+(\.?\d)*)/)[1];
        b[2]="gecko";
        b[3]=getGeckoVersion();
        return b;
    } else if (brs.search(/java[\/\s]?(\d+([\._]\d)*)/) != -1) {
    // Java (as web-browser)
        b[0]="java";
        b[1]=brs.match(/java[\/\s]?(\d+([\._]\d)*)/)[1];
        b[2]="java";
        b[3]=b[1];
        return b;
    } else if(brs.search(/lynx/) != -1) {
    // Lynx (SSD)
        b[0]="lynx";
        b[1]=brs.match(/lynx\/(\d+(\.?\d)*)/)[1];
        b[2]="libwww-fm";
        b[3]=brs.match(/libwww-fm\/(\d+(\.?\d)*)/)[1];
        return b;
    } else if(brs.search(/dillo/) != -1) {
    // Dillo (SSD)
        b[0]="dillo";
        b[1]=brs.match(/dillo\s*\/*(\d+(\.?\d)*)/)[1];
        b[2]="dillo";
        b[3]=b[1];
        return b;
    } else if(brs.search(/wget/) != -1) {
    // wget (SSD)
        b[0]="wget";
        b[1]=brs.match(/wget\/(\d+(\.?\d)*)/)[1];
        b[2]="robot";
        b[3]="-1"
        return b;
    } else if(brs.search(/googlebot\-image/) != -1) {
    // GoogleBot-Image (SSD)
        b[0]="googlebotimg";
        b[1]=brs.match(/googlebot\-image\/(\d+(\.?\d)*)/)[1];
        b[2]="robot";
        b[3]="-1"
        return b;
    } else if(brs.search(/googlebot/) != -1) {
    // GoogleBot (SSD)
        b[0]="googlebot";
        b[1]=brs.match(/googlebot\/(\d+(\.?\d)*)/)[1];
        b[2]="robot";
        b[3]="-1"
        return b;
    } else if(brs.search(/msnbot/) != -1) {
    // MSNBot (SSD)
        b[0]="msnbot";
        b[1]=brs.match(/msnbot\/(\d+(\.?\d)*)/)[1];
        b[2]="robot";
        b[3]="-1"
        return b;
    } else {
        b[0]="unknown";
        return b;
    }
}

// Return browser's (actual) major version or -1 if bad version entered
function getMajorVersion(v) { return (isEmpty(v) ? -1 : (hasDot(v) ? v : v.match(/(\d*)(\.\d*)*/)[1])) }

// Return browser's (actual) minor version or -1 if bad version entered
function getMinorVersion(v) { return (!isEmpty(v) ? (!hasDot(v) ? v.match(/\.(\d*([-\.]\d*)*)/)[1] : 0) : -1) }

// Return operating system we are running on top of
function getOS(obj) {

    var os=new Array("unknown", "unknown");

    (isEmpty(obj) ? brs=navigator.userAgent.toLowerCase() : brs=obj);

    if (brs.search(/windows\sce/) != -1) {
        os[0]="wince";
        try {
            os[1]=brs.match(/windows\sce\/(\d+(\.?\d)*)/)[1];
        } catch (e) { }
        return os;
    } else if ( (brs.search(/windows/) !=-1) || ((brs.search(/win9\d{1}/) !=-1))
) {
        os[0]="win";
        if (brs.search(/nt\s5\.1/) != -1) {
            os[1]="xp";
        } else if (brs.search(/nt\s5\.0/) != -1) {
            os[1]="2000";
        } else if ( (brs.search(/win98/) != -1) || (brs.search(/windows\s98/)!=
-1 ) ) {
            os[1]="98";
        } else if (brs.search(/windows\sme/) != -1) {
            os[1]="me";
        } else if (brs.search(/nt\s5\.2/) != -1) {
            os[1]="win2k3";
        } else if ( (brs.search(/windows\s95/) != -1) || (brs.search(/win95/)!=
-1 ) ) {
            os[1]="95";
        } else if ( (brs.search(/nt\s4\.0/) != -1) || (brs.search(/nt4\.0/) ) !=
-1) {
            os[1]="nt4";
        }

        return os;
    } else if (brs.search(/linux/) !=-1) {
        os[0]="linux";
        try {
            os[1] = brs.match(/linux\s?(\d+(\.?\d)*)/)[1];
        } catch (e) { }
        return os;
    } else if (brs.search(/mac\sos\sx/) !=-1) {
        os[0]="macosx";
        return os;
    } else if (brs.search(/freebsd/) !=-1) {
        os[0]="freebsd";
        try {
            os[1] = brs.match(/freebsd\s(\d(\.\d)*)*/)[1];
        } catch (e) { }
        return os;
    } else if (brs.search(/sunos/) !=-1) {
        os[0]="sunos";
        try {
            os[1]=brs.match(/sunos\s(\d(\.\d)*)*/)[1];
        } catch (e) { }
        return os;
    } else if (brs.search(/irix/) !=-1) {
        os[0]="irix";
        try {
            os[1]=brs.match(/irix\s(\d(\.\d)*)*/)[1];
        } catch (e) { }
        return os;
    } else if (brs.search(/openbsd/) !=-1) {
        os[0]="openbsd";
        try {
            os[1] = brs.match(/openbsd\s(\d(\.\d)*)*/)[1];
        } catch (e) { }
        return os;
    } else if ( (brs.search(/macintosh/) !=-1) || (brs.search(/mac\x5fpowerpc/)
!= -1) ) {
        os[0]="macclassic";
        return os;
    } else if (brs.search(/os\/2/) !=-1) {
        os[0]="os2";
        try {
            os[1]=brs.match(/warp\s((\d(\.\d)*)*)/)[1];
        } catch (e) { }
        return os;
    } else if (brs.search(/openvms/) !=-1) {
        os[0]="openvms";
        try {
            os[1]=brs.match(/openvms\sv((\d(\.\d)*)*)/)[1];
        } catch (e)  { }
        return os;
    } else if ( (brs.search(/amigaos/) !=-1) || (brs.search(/amiga/) != -1) ) {
        os[0]="amigaos";
        try {
            os[1]=brs.match(/amigaos\s?(\d(\.\d)*)*/)[1];
        } catch (e) { }
        return os;
    } else if (brs.search(/hurd/) !=-1) {
        os[0]="hurd";
        return os;
    } else if (brs.search(/hp\-ux/) != -1) {
        os[0]="hpux";
        try {
            os[1]=brs.match(/hp\-ux\sb\.[\/\s]?(\d+([\._]\d)*)/)[1];
        } catch (e) { }
        return os;
    } else if ( (brs.search(/unix/) !=-1) || (brs.search(/x11/) != -1 ) ) {
        os[0]="unix";
        return os;
    } else if (brs.search(/cygwin/) !=-1) {
        os[0]="cygwin";
        return os;
    } else if (brs.search(/java[\/\s]?(\d+([\._]\d)*)/) != -1) {
        os[0]="java";
        try {
            os[1]=brs.match(/java[\/\s]?(\d+([\._]\d)*)/)[1];
        } catch (e) { }
        return os;
    } else if (brs.search(/palmos/) != -1) {
        os[0]="palmos";
        return os;
    } else if (brs.search(/symbian\s?os\/(\d+([\._]\d)*)/) != -1) {
        os[0]="symbian";
        try {
            os[1]=brs.match(/symbian\s?os\/(\d+([\._]\d)*)/)[1];
        } catch (e) { }
        return os;
    } else {
        os[0]="unknown";
        return os;
    }
}

// Return Gecko version
function getGeckoVersion() { return brs.match(/gecko\/([0-9]+)/)[1]; }

// Return MSIE version
function getMSIEVersion() { return brs.match(/msie\s(\d+(\.?\d)*)/)[1]; }

// Return full browser UA string
function getFullUAString(obj) { (isEmpty(obj) ? brs=navigator.userAgent.toLowerCase() : brs=obj); return brs; }

// Is input empty?
function isEmpty(input) { return (input==null || input =="") }

// Does this string contain a dot?
function hasDot(input) { return (input.search(/\./) == -1) }