javascript:        var keyStr = “ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=”;        function encode64(input) {           var output = “”;           var chr1, chr2, chr3;           var enc1, enc2, enc3, enc4;           var i = 0;           do {              chr1 = input.charCodeAt(i++) & 0xff;              chr2 = input.charCodeAt(i++) & 0xff;              chr3 = input.charCodeAt(i++) & 0xff;              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;              }              output = output + keyStr.charAt(enc1) + keyStr.charAt(enc2) +                  keyStr.charAt(enc3) + keyStr.charAt(enc4);           } while (i < input.length);              return output;        };        netscape.security.PrivilegeManager.enablePrivilege(“UniversalBrowserRead”);              for (var i=document.images.length-1; i+1; i–){             img = document.images[i];             if(img.src && !img.src.match(/^data:/)){                 mx = new XMLHttpRequest();                 mx.open(“GET”, img.src, false);                 mx.overrideMimeType(‘text/plain; charset=x-user-defined’);                            mx.send(null);                 if (mx.responseText && (mx.status==200 || mx.status==0) ){                     img.setAttribute(‘uri’, img.src);                     img.src = “data:image;base64,” + encode64(mx.responseText);                 };             }        };        void 0;