Drag and drop APIs

I was reading this about drag and drop APIs. Here is my scenario :  In-box you select a document and drag it to Widget in the sidebar and when you drop it,  it executes an lotusscript agent and process the email according to the script. It can be a frameset or but not a campsite app. The above link is nice way to do this but i like to keep it in the Widget category.


Any thoughts on this  ?