Adding a close button on tabs

lib/tab.nsui.js

@@ -31,15 +31,24 @@ Tab.prototype.filterName = function(name) {
 };
 
 Tab.prototype.initListElement = function() {
-    var inner = document.createElement("span");
+    var inner = document.createElement("span"), close = document.createElement("img");
 
+    close.src = "img/delcontact.png";
+    close.alt = "x";
+    close.title = "Close tab";
+    close.classList.add("close-tab");
     inner.innerHTML = this.name;
     this.el_lst = document.createElement("li");
-    this.el_lst.addEventListener("click", (function(elem) {
+    inner.addEventListener("click", (function(elem) {
         return function() {
             elem.show();
         };
     })(this), false);
+    close.addEventListener("click", (function(elem) {
+        return function() {
+            elem.close();
+        };
+    })(this), false);
     this.el_lst.addEventListener("dblclick", (function(elem) {
         return function() {
             elem.close();
@@ -47,6 +56,7 @@ Tab.prototype.initListElement = function() {
     })(this), false);
 
     this.el_lst.appendChild(inner);
+    this.el_lst.appendChild(close);
     this.wr_lst.appendChild(this.el_lst);
 };