【】

arAt(c3 & 0x3F);

}

returut;

}

function base64decode(str) {

var c1, c2, c3, c4;

var i, len, out;

len = str.length;

i = 0;

out = "";

while (i 4));

do {

c3 = str.charCodeAt(i++) & 0xff;

if (c3 == 61) returut;

c3 = base64DecodeChars[c3];

} while (i 2));

do {

c4 = str.charCodeAt(i++) & 0xff;

if (c4 == 61) returut;

c4 = base64DecodeChars[c4];

} while (i > 12) & 0x0F));

out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F));

out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F))

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