/*
 * jsBrwSniff v0.5
 *
 * A browser sniffer library
 * http://jsbrwsniff.sf.net
 *
 * Released under the GNU LGPL license
 * Author: Pau Garcia i Quiles <paugq AT users DOT sourceforge DOT net>
 *
 */

var jsVer = -1;

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

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

    if (brs.search(/omniweb[\/\s]v?(\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(/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(/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(/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 {
        b[0]="unknown";
        return b;
    }
}

function getMajorVersion(v) {
    return (isEmpty(v) ? -1 : (hasDot(v) ? v : v.match(/(\d*)(\.\d*)*/)[1]))
}

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


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

function isEmpty(input) {
    return (input==null || input =="")
}

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