/* javascriptová korekce prohlížečů při načítání stránky - verze pro jquery */
korekceProhlizecu();
function korekceProhlizecu() {
    /* pro operu verze < 10 skryjeme vodorovny scrollbar trikem */
    if ($.browser.opera) {
        var version = $.browser.version.substr(0, 2);
        if ((version == "7.") || (version == "8.") || (version == "9.")) {
            $("html").css("overflow-x", "auto");
            $("html").css("overflow-y", "auto");
            $("html").css("height", "101%");
        }
    }
};


function getPortalBase() {

    if (document.baseURI != undefined) {
        return document.baseURI;
    }

    var baseArray = document.getElementsByTagName("base");
    if (baseArray.length > 0) {
        return baseArray[0].getAttribute('href');
    }
    else {
        return "";
    }
}


function showImg(url, width, height) {
    var checkedUrl;

    if (url == parseInt(url)) {
        // misto url nam bylo predano docid - musime slozit adresu

        checkedUrl = getPortalBase() + "imgDetail.aspx?docid=" + url;
    }
    else {
        checkedUrl = url;
    }

    width += 50;
    height += 50;

    if (height + 50 > screen.height)
        height = screen.height - 200;

    if (width + 50 > screen.width)
        width = screen.width - 100;

    x = (screen.width - width) / 2;
    y = (screen.height - height) / 2;

    var a = window.open(checkedUrl, "imgDialog", "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,left=" + x + ",top=" + y + ",resizable=yes,width=" + (width) + ",height=" + (height));
}


function imgBrowser(url, width, height) {

    height = 780;

    if (height > screen.height)
        height = screen.height;


    x = (screen.width - width) / 2;
    y = (screen.height - height) / 2;

    var a = window.open(url, "imgBrowser", "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,left=" + x + ",top=" + y + ",resizable=yes,width=1000,height=" + height);
}


function rankDetail(url) {

    var width = 900;
    var height = 450;

    if (height > screen.height)
        height = screen.height;

    x = (screen.width - width) / 2;
    y = (screen.height - height) / 2;

    var params = "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,left=" + x + ",top=" + y + ",resizable=yes,width=" + width + ",height=" + height;
    
    return window.open(url, "rankDetail", params);
}


function showVideo(url) {
    width = 430;
    height = 420;

    width += 50;
    height += 50;

    if (height + 50 > screen.height)
        height = screen.height - 200;

    if (width + 50 > screen.width)
        width = screen.width - 100;

    x = (screen.width - width) / 2;
    y = (screen.height - height) / 2;


    // PROBLEM s BASE ELEMENT
    // z detailu clanku <url>/clanek/ se prid i slozka clanek tzn. <url>/clanek/imgDetail.aspx
    // spravne ma byt <url>/imgDetail.aspx (ci alternativa) <url>/script/imgDetail.aspx    
    var a = window.open(url, "imgDialog", "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,left=" + x + ",top=" + y + ",resizable=yes,width=" + (width) + ",height=" + (height));
}



var Base64 = {

    // private property
    _keyStr: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",

    // public method for encoding
    encode: function(input) {
        var output = "";
        var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
        var i = 0;

        input = Base64._utf8_encode(input);

        while (i < input.length) {

            chr1 = input.charCodeAt(i++);
            chr2 = input.charCodeAt(i++);
            chr3 = input.charCodeAt(i++);

            enc1 = chr1 >> 2;
            enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
            enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
            enc4 = chr3 & 63;

            if (isNaN(chr2)) {
                enc3 = enc4 = 64;
            } else if (isNaN(chr3)) {
                enc4 = 64;
            }

            output = output +
            this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) +
            this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4);

        }

        return output;
    },

    // public method for decoding
    decode: function(input) {
        var output = "";
        var chr1, chr2, chr3;
        var enc1, enc2, enc3, enc4;
        var i = 0;

        input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");

        while (i < input.length) {

            enc1 = this._keyStr.indexOf(input.charAt(i++));
            enc2 = this._keyStr.indexOf(input.charAt(i++));
            enc3 = this._keyStr.indexOf(input.charAt(i++));
            enc4 = this._keyStr.indexOf(input.charAt(i++));

            chr1 = (enc1 << 2) | (enc2 >> 4);
            chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
            chr3 = ((enc3 & 3) << 6) | enc4;

            output = output + String.fromCharCode(chr1);

            if (enc3 != 64) {
                output = output + String.fromCharCode(chr2);
            }
            if (enc4 != 64) {
                output = output + String.fromCharCode(chr3);
            }

        }

        output = Base64._utf8_decode(output);

        return output;

    },

    // private method for UTF-8 encoding
    _utf8_encode: function(string) {
        string = string.replace(/\r\n/g, "\n");
        var utftext = "";

        for (var n = 0; n < string.length; n++) {

            var c = string.charCodeAt(n);

            if (c < 128) {
                utftext += String.fromCharCode(c);
            }
            else if ((c > 127) && (c < 2048)) {
                utftext += String.fromCharCode((c >> 6) | 192);
                utftext += String.fromCharCode((c & 63) | 128);
            }
            else {
                utftext += String.fromCharCode((c >> 12) | 224);
                utftext += String.fromCharCode(((c >> 6) & 63) | 128);
                utftext += String.fromCharCode((c & 63) | 128);
            }

        }

        return utftext;
    },

    // private method for UTF-8 decoding
    _utf8_decode: function(utftext) {
        var string = "";
        var i = 0;
        var c = c1 = c2 = 0;

        while (i < utftext.length) {

            c = utftext.charCodeAt(i);

            if (c < 128) {
                string += String.fromCharCode(c);
                i++;
            }
            else if ((c > 191) && (c < 224)) {
                c2 = utftext.charCodeAt(i + 1);
                string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
                i += 2;
            }
            else {
                c2 = utftext.charCodeAt(i + 1);
                c3 = utftext.charCodeAt(i + 2);
                string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
                i += 3;
            }

        }

        return string;
    }

}


/*----- ZJISTENI DRUHU PROHLIZECE -----*/
function browser() {
    var userAgent = navigator.userAgent.toLowerCase();
    if (userAgent.indexOf("msie") != -1) {
        return "ie";
    }
    else if (userAgent.indexOf("firefox") != -1) {
        return "firefox";
    }
    else if (userAgent.indexOf("opera") != -1) {
        return "opera";
    }
    else return "other";
};


/*----- DODATECNA ZMENA OKNA OBRAZKU (imgDetail.xsl) -----*/
function remanipulator(width, height) {
    if (height + 50 > screen.height)
        height = screen.height - 100;
    if (width + 50 > screen.width)
        width = screen.width - 50;

    posX = (screen.width - width) / 2;
    posY = (screen.height - height) / 2;

    // pozor: Nejdriv premistit a potom teprve zvetsovat (aby bylo na obrazovce dost mista)
    window.moveTo(posX, posY);

    /* zmena velikosti okna podle prohlizecu */
    if (browser() == "ie") {
        window.resizeTo(width + 50, height + 130);
    }
    else if (browser() == "firefox") {
        window.resizeTo(width + 50, height + 130);
    }
    else if (browser() == "opera") {
        window.resizeTo(width + 50, height + 100);
    }
    else {
        window.resizeTo(width, height);
    }
};