title: List has been jurked on Creation time in flex
body: <p>I have created a custom control Which contains an header(HBox) and list control below the header. I can open and close the list (Meaning list.height = 0 and list.height = 200) by using the header click event. Initially the list will be in closed state (height = 0). When we open it for the first time. It takes too much time. For the successive open of the same list looks smoother ( I suppose this is because itemrenderer is being reused). I want to open the list for the first time smoothly. Any one please help</p>
  
  <p>I have created my own renderer for list control which contains one 5 combobox inside a HBox</p>