Sleep / wait function for Business Server Page

Hi friends of BSP,

on my BSP I generate at the onload function x iframes for calling BEx 7.x WebTemplates.

It is a dynamical count of iframes depending on some URL parameters.

Now, I get the problem, that if the count of iframes is to big, the system can not load all WebTemplates, because they are generated to fast and the system can not handle this amount of processes.

Is there a possibility to include a wait or sleep function?

If the answer is "yes", how to implement those functions?

thanks for any help and support

kind regards

Patrick