function base64_encode(data){var b64="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";var o1,o2,o3,h1,h2,h3,h4,bits,i=0,ac=0,enc="",tmp_arr=[];if(!data){return data;}
data=utf8_encode(data+'');do{o1=data.charCodeAt(i++);o2=data.charCodeAt(i++);o3=data.charCodeAt(i++);bits=o1<<16|o2<<8|o3;h1=bits>>18&0x3f;h2=bits>>12&0x3f;h3=bits>>6&0x3f;h4=bits&0x3f;tmp_arr[ac++]=b64.charAt(h1)+b64.charAt(h2)+b64.charAt(h3)+b64.charAt(h4);}while(i<data.length);enc=tmp_arr.join('');switch(data.length%3){case 1:enc=enc.slice(0,-2)+'==';break;case 2:enc=enc.slice(0,-1)+'=';break;}
return enc;}
function utf8_encode(string){string=(string+'').replace(/\r\n/g,"\n").replace(/\r/g,"\n");var utftext="";var start,end;var stringl=0;start=end=0;stringl=string.length;for(var n=0;n<stringl;n++){var c1=string.charCodeAt(n);var enc=null;if(c1<128){end++;}else if((c1>127)&&(c1<2048)){enc=String.fromCharCode((c1>>6)|192)+String.fromCharCode((c1&63)|128);}else{enc=String.fromCharCode((c1>>12)|224)+String.fromCharCode(((c1>>6)&63)|128)+String.fromCharCode((c1&63)|128);}
if(enc!=null){if(end>start){utftext+=string.substring(start,end);}
utftext+=enc;start=end=n+1;}}
if(end>start){utftext+=string.substring(start,string.length);}
return utftext;}