Megeia1 and Firefox 4 plugins

I downloaded and installed Mageia1 and find out that Firefox 4 can't open java and flash site. The solution for flash is easy.Just download .rpm flash from Adobe web site and install it. For the java plugin, I waste three days to find out the solution to this. Just install from the repository by using "rpmi icedtea-web" and that's it. Hope this can help.