Hi Ben,

I can't think of any easy way to create the <div> in JavaScript without using a different id that would also have the collision problem.

If you find yourself adding the same webpart multiple times, we could add a special substitution, just as we support <%=contextPath%> and <%=containerPath%>, that assigns a GUID for the single webpart instance. You could use that instead of hard-coding a semi-unique id value.

Does that sound like a good way to go?

Thanks,
Josh