What is the cleanest way to disable postback controls until the page has fully loaded?
<p>I have a website that has some intense graphics, and people with slow connections might require download time.  While their browser is downloading, they have form options. And a lot of times they will fill the form out and hit submit.</p>

<p>This causes an event validation issue, because the page wasn't fully loaded.  I can think of a lot of ways off the top of my head to fix this. I could go back and disable every single control, and then write javascript to enable these controls clientside when the page is loaded.</p>

<p>I also looked into blockui, but it will block the whole page or just a div. I am looking for something I can stick in my masterpage and forget about it.</p>

<p>Any ideas?</p>
