Workflow to delete subsite when list item with same name deleted

Hi friends,

  Currently i have workflow which deletes site when i right click on list item and selec the workflow and manually starts it, it will delete site and that list item also.

List Item -> Right Click -> Workflow -> Start Workflow of delete -> deletes site and list item

But i want workflow which when i rightclick List item and say delete item,that time workflow will fire and delete site and list item.

means

List Item -> Right Click -> Delete Item -> will delete site and item

How to do this?

Thanks,

Kapil