zk.afterLoad('zul.tab', function() {
    var _xtab = {};
    zk.override(zul.tab.Tab.prototype, _xtab, {
		bind_: function (desktop, skipper, after) {
			this.$supers(zul.tab.Tab, 'bind_', arguments);
			var closebtn = this.isClosable() ? this.$n('cls') : null,
				tab = this;
			if (closebtn) {
				this.domListen_(closebtn, 'onClick', '_doCloseClick');
			}
			if (tab.isSelected()) {
				zk.afterMount(function () {
					if (tab.desktop && tab.getTabbox().inAccordionMold()) {
						var panel = tab.getLinkedPanel(),
							cave = panel ? panel.$n('cave') : null;
						if (cave && cave.style.display == 'none')
							panel._sel(true, true);
					}
					if (tab.isSelected()) {
						tab._sel(false, true);
					}
				});
			}

			if (this.getHeight())
				this._calcHgh();

			this.parent._shallCheck = true;
		}
    });
});