/**
*
*  Base64 encode / decode
*  http://www.webtoolkit.info/
*
**/
 
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;
    }
 
}



/**
*
*  Javascript cookies
*  http://www.webtoolkit.info/
*
**/
 
function CookieHandler() {
 
    this.setCookie = function (name, value, seconds) {
 
        if (typeof(seconds) != 'undefined') {
            var date = new Date();
            date.setTime(date.getTime() + (seconds*1000));
            var expires = "; expires=" + date.toGMTString();
        }
        else {
            var expires = "";
        }
 
        document.cookie = name+"="+value+expires+"; path=/";
    }
 
    this.getCookie = function (name) {
 
        name = name + "=";
        var carray = document.cookie.split(';');
 
        for(var i=0;i < carray.length;i++) {
            var c = carray[i];
            while (c.charAt(0)==' ') c = c.substring(1,c.length);
            if (c.indexOf(name) == 0) return c.substring(name.length,c.length);
        }
 
        return null;
    }
 
    this.deleteCookie = function (name) {
        this.setCookie(name, "", -1);
    }
 
}