When we traverse from one page to the other and this is not different php pages, its the same html page only dom manipulation. to show different gui one after the other. Now on these screens there are some images that are preloaded like loaded upfront and some are pulled at run time when user visits that screen. All images that are pulled on run time show a curtain effect. This is problem number 1, we cannot preload these images since the systems are having only 250mb ram. Now the other problem is that when the user goes from one screen to the other the entire screen builds up in one shot on ff 1.0.8 but on ff 3.5 or 3.6 it builds up in parts Do we need to change some configuration in firefox so that the curtain effect is eliminated, Is there a setting in firefox 3.5 that can make the rendering more like ff 1.0.8 or ff 2. Is there any different that you suggest we do our dom manipulations or some ways that we should not do if that is the cause of the issue. This is very urgent since we are loosing users due to performance problems