New Post: $().SPServices.SPCascadeDropdowns without relationships list

Hi,
I need to create cascaded dropdowns on a SharePoint site (not on a list form), containing data from SharePoint lists. I don't have a relationshipList, I just need to fill the dropdowns.

Is there any way I can use SPCascadeDropdowns or any other function for this? I saw in the source that most of the work is done by the cascadeDropdown function, which is not external available.

Thanks
pascal