如何保存拖动物品的位置

HI, I want to save the position of dropped items to database[aspx,javascript]. The user can drop any number of item,resize and delete[hide] and finally when they hit 'save' button ,it should be saved to database. I have code to do this in drop /stop but it will save all the dropped items i want to save only at final stage. I guess lot of developer should have already done this,so please suggest some code.HI, I want to save the position of dropped item