Frustrating z-index issues

[khastings7]

I have a web user control that is used as a date picker. It puts a calendar, month and year dropdowns together for users to pick dates on a website. I have used the iframe under the div method to make it stay on top of dropdowns and other controls (utilizing size and z-index) But when I have any actual Custom Control under it... it only stays hidden untill I choose to change data and it posts back. Now for the weird part. If you choose certain years... 2003 or 4 for example.... IT WORKS.... Anyway here is the code for the ascx <%@ Control Language="vb" AutoEventWireup="false" Codebehind="DatePicker.ascx.vb" Inherits="HSI.Engine.DatePicker" TargetSchema="http://schemas.microsoft.com/intellisense/ie5" %> var <%=m_ID%>dp = new DatePicker('<%=m_ID%>', 1);