var Base64={_keyStr:"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",encode:function(b){for(var d="",c,a,f,g,h,e,i=0,b=Base64._utf8_encode(b);i<b.length;)c=b.charCodeAt(i++),a=b.charCodeAt(i++),f=b.charCodeAt(i++),g=c>>2,c=(c&3)<<4|a>>4,h=(a&15)<<2|f>>6,e=f&63,isNaN(a)?h=e=64:isNaN(f)&&(e=64),d=d+this._keyStr.charAt(g)+this._keyStr.charAt(c)+this._keyStr.charAt(h)+this._keyStr.charAt(e);return d},decode:function(b){for(var d="",c,a,f,g,h,e=0,b=b.replace(/[^A-Za-z0-9\+\/\=]/g,"");e<
b.length;)c=this._keyStr.indexOf(b.charAt(e++)),a=this._keyStr.indexOf(b.charAt(e++)),g=this._keyStr.indexOf(b.charAt(e++)),h=this._keyStr.indexOf(b.charAt(e++)),c=c<<2|a>>4,a=(a&15)<<4|g>>2,f=(g&3)<<6|h,d+=String.fromCharCode(c),g!=64&&(d+=String.fromCharCode(a)),h!=64&&(d+=String.fromCharCode(f));return d=Base64._utf8_decode(d)},_utf8_encode:function(b){for(var b=b.replace(/\r\n/g,"\n"),d="",c=0;c<b.length;c++){var a=b.charCodeAt(c);a<128?d+=String.fromCharCode(a):(a>127&&a<2048?d+=String.fromCharCode(a>>
6|192):(d+=String.fromCharCode(a>>12|224),d+=String.fromCharCode(a>>6&63|128)),d+=String.fromCharCode(a&63|128))}return d},_utf8_decode:function(b){for(var d="",c=0,a=c1=c2=0;c<b.length;)a=b.charCodeAt(c),a<128?(d+=String.fromCharCode(a),c++):a>191&&a<224?(c2=b.charCodeAt(c+1),d+=String.fromCharCode((a&31)<<6|c2&63),c+=2):(c2=b.charCodeAt(c+1),c3=b.charCodeAt(c+2),d+=String.fromCharCode((a&15)<<12|(c2&63)<<6|c3&63),c+=3);return d}};