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