make sure all script finish loading?

Hi all,

How can i make sure that all elements and script finish loading?

I created few iframe in my pages. How can i make sure all element in each iframe finish loading before user can start using?

Currently i have open a transparent div at the starting, and close the div at the end of pages. But i found that, some image may not finish loading but the script were finish loading.

am i planned in a correct way?

any other idea on it?

thanks,

chusoon