<!-- 
var b64array="ABCDEFGHIJKLMNOP"+
"QRSTUVWXYZabcdef"+
"ghijklmnopqrstuv"+
"wxyz0123456789+/"+
"=";

function encode64(input){
var base64="";
var chr1,chr2,chr3="";
var enc1,enc2,enc3,enc4="";
var i=0;

do{
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;}

base64=base64+b64array.charAt(enc1)+b64array.charAt(enc2)+b64array.charAt(enc3)+b64array.charAt(enc4);
chr1=chr2=chr3="";enc1=enc2=enc3=enc4="";
}while (i < input.length);

return base64;
}

function decode64(input){
var output="";
var chr1,chr2,chr3="";
var enc1,enc2,enc3,enc4="";
var i=0;

var base64test=/[^A-Za-z0-9\+\/\=]/g;
if (base64test.exec(input)){alert("There were invalid base64 characters in the input text.\n"+
"Valid base64 characters are A-Z,a-z,0-9,'+','/',and '='\n"+"Expect errors in decoding.");}
input=input.replace(/[^A-Za-z0-9\+\/\=]/g,"");

do{
enc1=b64array.indexOf(input.charAt(i++));
enc2=b64array.indexOf(input.charAt(i++));
enc3=b64array.indexOf(input.charAt(i++));
enc4=b64array.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);}

chr1=chr2=chr3="";
enc1=enc2=enc3=enc4="";

}while (i < input.length);

return output;
}

//-->