JQuery :: Get Receiver ID For Draggable Elements

I want to use .css() to restyle list elements, I have 4 lists, they are connected. But I need to know where element dropped. I can read where it comes from with this code: ui.sender.attr('id')
How can I know where it dropped?

This is the code if it's necessary;
$(function() {
$("#sol, #sag, #orta, #deaktif").sortable({
opacity: 0.6,
connectWith: '.bagla',
scroll: false,
receive: function(event, ui) {
var ComeID = ui.sender.attr('id');
alert(ComeID); //just for test
}}).disableSelection();
});