v 1.3.5 improve the drop down container's drop behaviour logical;
+ added disabled option;
+ added events:beforeClickItem/whenClickItem/afterClickItem
+
v 1.3.1 speed up the rendering process.
+ update the perfermance and the logic about the dropdown direction.
+ change only trigger when value changed.
+ support select's unchange event.
+
v 1.3.0 added placeHolder; added valueNullable; Fixed Variable Scope Bug;
Improved the function usage (_li_click,_apply_max_item is added
, checkSelect has been changed to _init_li);
@@ -63,4 +71,5 @@ $(function(){