Rename private attribute _element to _el

Change-Id: I9c7a31bd6844636737ffa6456562b997f5e370a3
diff --git a/dev/js/src/hint/item.js b/dev/js/src/hint/item.js
index 2fcecee..5c9a9a7 100644
--- a/dev/js/src/hint/item.js
+++ b/dev/js/src/hint/item.js
@@ -94,8 +94,8 @@
      */
     element : function () {
       // already defined
-      if (this._element !== undefined)
-	      return this._element;
+      if (this._el !== undefined)
+	      return this._el;
 
       // Create list item
       var li = document.createElement("li");
@@ -117,7 +117,7 @@
 	      desc.addT(this._desc);
 	      li.appendChild(desc);
       };
-      return this._element = li;
+      return this._el = li;
     }
   };
 });