 			.css("left", left).css("top", top)
 			.css("min-width", dropdownDom.offsetWidth)
 			.css("max-width",document.body.clientWidth)
-
-		$dom.css({
-			zIndex: cola.floatWidget.zIndex()
-		})
 
 		@_animation = "fade"
 

		@_currentItem = item
		@_skipFindCurrentItem = true
		@set("value", value)
		@_skipFindCurrentItem = false
		@refresh()
		return

		beforeOpen: null
		open: null
		close: null
		selectData: null

	_initDom: (dom) ->
		super(dom)
