Drag and Drop "Open page to drop 3 successive objects"

I created ascriptin Adobeto make adrag and drop.Everything works, but my problem is to causethe opening of apage after 3successiveobjects on thedrop.Would you havethe solution?

my script:

// insert code to be run when the symbol is created here

yepnope({nope:['jquery-ui-1.10.4.custom.min.js'], complete: init});

function init(){

                //Use the code! Draggable! Droppable!!

                sym.$('ourson').draggable({opacity:.5, revert:'invalid'});

   //Droppable... on the target!

sym.$('Rectangle2').droppable({drop: function() {sym.getSymbol('ourson').play();}});

   //Use the code! Draggable! Droppable!!

                sym.$('girafe').draggable({opacity:.5, revert:'invalid'});

   //Droppable... on the target!

sym.$('Rectangle2').droppable({drop: function() {sym.getSymbol('girafe').play();}});

   //Use the code! Draggable! Droppable!!

                sym.$('ballon').draggable({opacity:.5, revert:'invalid'});

   //Droppable... on the target!

sym.$('Rectangle2').droppable({drop: function() {sym.getSymbol('ballon').play();}});

missingthe end

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missingthe end

   }