UpdatePanel and Sys.Application.add_load Woes

The ScriptManager usually puts calls to Sys.Application.initialize at the end of a page, right before the ending form tag. For custom composite controls, however, this call can come before the script has been output for your custom control. If you try to use the ScriptManager to initialize your control, it won't initialize in Firefox 3, Opera 9, or Safari 3. Here's how you can work around it.