I have been using nagios + pnp4nagios for a while and am happy with the images rrdtool creates. My current task is to create a panel that has some statistics generated by nagios and after a while the statistics change. I’m looking for something like that: 
But also able to switch screens automatically. I do know that I can make a timed javascript function that switches the layout after a determined time, but I also want to add effects and other stuff to the picture. Any good javascript library that has it?
such effects can be achieved easily with most javascript libraries. I like jQuery quite well. See the examples in link text for inspiration