Cleanup match info data

Change-Id: I815cf976fbb78223968274fa4955a52f708a03dc
diff --git a/dev/js/src/util.js b/dev/js/src/util.js
index d803a9d..719c889 100644
--- a/dev/js/src/util.js
+++ b/dev/js/src/util.js
@@ -33,6 +33,15 @@
 };
 
 
+HTMLElement.prototype.addE = function (tag) {
+  return this.appendChild(document.createElement(tag));
+};
+
+HTMLElement.prototype.addT = function (text) {
+  return this.appendChild(document.createTextNode(text));
+};
+
+
 // Utility for removing all children of a node
 function _removeChildren (node) {
   // Remove everything underneath
@@ -40,6 +49,7 @@
     node.removeChild(node.firstChild);
 };
 
+
 // Utility to get either the charCode
 // or the keyCode of an event
 function _codeFromEvent (e) {