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