--- a/js/flotr2/lib/base64.js
+++ b/js/flotr2/lib/base64.js
@@ -1,1 +1,113 @@
+/* Copyright (C) 1999 Masanao Izumo <iz@onicos.co.jp>
+ * Version: 1.0
+ * LastModified: Dec 25 1999
+ * This library is free.  You can redistribute it and/or modify it.
+ */
 
+/*
+ * Interfaces:
+ * b64 = base64encode(data);
+ * data = base64decode(b64);
+ */
+
+(function() {
+
+var base64EncodeChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+var base64DecodeChars = [
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
+    52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1,
+    -1,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14,
+    15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
+    -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
+    41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1];
+
+function base64encode(str) {
+    var out, i, len;
+    var c1, c2, c3;
+
+    len = str.length;
+    i = 0;
+    out = "";
+    while(i < len) {
+	c1 = str.charCodeAt(i++) & 0xff;
+	if(i == len)
+	{
+	    out += base64EncodeChars.charAt(c1 >> 2);
+	    out += base64EncodeChars.charAt((c1 & 0x3) << 4);
+	    out += "==";
+	    break;
+	}
+	c2 = str.charCodeAt(i++);
+	if(i == len)
+	{
+	    out += base64EncodeChars.charAt(c1 >> 2);
+	    out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));
+	    out += base64EncodeChars.charAt((c2 & 0xF) << 2);
+	    out += "=";
+	    break;
+	}
+	c3 = str.charCodeAt(i++);
+	out += base64EncodeChars.charAt(c1 >> 2);
+	out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));
+	out += base64EncodeChars.charAt(((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6));
+	out += base64EncodeChars.charAt(c3 & 0x3F);
+    }
+    return out;
+}
+
+function base64decode(str) {
+    var c1, c2, c3, c4;
+    var i, len, out;
+
+    len = str.length;
+    i = 0;
+    out = "";
+    while(i < len) {
+	/* c1 */
+	do {
+	    c1 = base64DecodeChars[str.charCodeAt(i++) & 0xff];
+	} while(i < len && c1 == -1);
+	if(c1 == -1)
+	    break;
+
+	/* c2 */
+	do {
+	    c2 = base64DecodeChars[str.charCodeAt(i++) & 0xff];
+	} while(i < len && c2 == -1);
+	if(c2 == -1)
+	    break;
+
+	out += String.fromCharCode((c1 << 2) | ((c2 & 0x30) >> 4));
+
+	/* c3 */
+	do {
+	    c3 = str.charCodeAt(i++) & 0xff;
+	    if(c3 == 61)
+		return out;
+	    c3 = base64DecodeChars[c3];
+	} while(i < len && c3 == -1);
+	if(c3 == -1)
+	    break;
+
+	out += String.fromCharCode(((c2 & 0XF) << 4) | ((c3 & 0x3C) >> 2));
+
+	/* c4 */
+	do {
+	    c4 = str.charCodeAt(i++) & 0xff;
+	    if(c4 == 61)
+		return out;
+	    c4 = base64DecodeChars[c4];
+	} while(i < len && c4 == -1);
+	if(c4 == -1)
+	    break;
+	out += String.fromCharCode(((c3 & 0x03) << 6) | c4);
+    }
+    return out;
+}
+
+if (!window.btoa) window.btoa = base64encode;
+if (!window.atob) window.atob = base64decode;
+
+})();