diff --git a/gui/html/chronoshare-helpers.js b/gui/html/chronoshare-helpers.js
new file mode 100644
index 0000000..ed95925
--- /dev/null
+++ b/gui/html/chronoshare-helpers.js
@@ -0,0 +1,58 @@
+function number_format( number, decimals, dec_point, thousands_sep ) {
+    // http://kevin.vanzonneveld.net
+    // +   original by: Jonas Raoni Soares Silva (http://www.jsfromhell.com)
+    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
+    // +     bugfix by: Michael White (http://crestidg.com)
+    // +     bugfix by: Benjamin Lupton
+    // +     bugfix by: Allan Jensen (http://www.winternet.no)
+    // +    revised by: Jonas Raoni Soares Silva (http://www.jsfromhell.com)
+    // *     example 1: number_format(1234.5678, 2, '.', '');
+    // *     returns 1: 1234.57
+
+    var n = number, c = isNaN(decimals = Math.abs(decimals)) ? 2 : decimals;
+    var d = dec_point == undefined ? "," : dec_point;
+    var t = thousands_sep == undefined ? "." : thousands_sep, s = n < 0 ? "-" : "";
+    var i = parseInt(n = Math.abs(+n || 0).toFixed(c)) + "", j = (j = i.length) > 3 ? j % 3 : 0;
+
+    return s + (j ? i.substr(0, j) + t : "") + i.substr(j).replace(/(\d{3})(?=\d)/g, "$1" + t) + (c ? d + Math.abs(n - i).toFixed(c).slice(2) : "");
+}
+
+function SegNumToFileSize (segNum) {
+    filesize = segNum * 1024;
+
+    if (filesize >= 1073741824) {
+	filesize = number_format(filesize / 1073741824, 2, '.', '') + ' Gb';
+    } else {
+	if (filesize >= 1048576) {
+     	    filesize = number_format(filesize / 1048576, 2, '.', '') + ' Mb';
+   	} else {
+	    if (filesize > 1024) {
+    		filesize = number_format(filesize / 1024, 0) + ' Kb';
+  	    } else {
+    		filesize = '< 1 Kb';
+	    };
+ 	};
+    };
+    return filesize;
+};
+
+/**
+ * @brief Convert binary data represented as non-escaped hex string to Uint8Array
+ * @param str String like ba0cb43e4b9639c114a0487d5faa7c70452533963fc8beb37d1b67c09a48a21d
+ *
+ * Note that if string length is odd, null will be returned
+ */
+StringHashToUint8Array = function (str) {
+    if (str.length % 2 != 0) {
+        return null;
+    }
+
+    var buf = new Uint8Array (str.length / 2);
+
+    for (var i = 0; i < str.length; i+=2) {
+        value = parseInt (str.substring (i, i+2), 16);
+        buf[i/2] = value;
+    }
+
+    return buf;
+};