How can I execute some Javascript after all ASP.NET startup scripts have been executed?

I have an ASP.NET page with a variety of client-side controls being initialized via ClientScriptManager.RegisterStartupScript. I have another script that I need to ensure runs only after all of the registered startup scripts have executed, without having control over the order they're registered in.

Is there any way I can make my script execute only after the start up scripts have been run?