fires when a component item was clicked
| id | string | the id of the clicked item | 
| e | Event | a native event object | 
| node | HTMLElement | the target HTML element | 
list.attachEvent("onItemClick", function(id, e, node){
    var item = this.getItem(id);
    //... some code here ... 
});
The most common use case for such events is getting info about the component item that has just been clicked. It can be done with a common getItem method that requires item ID as parameter.