Select DIV with highest z-index

Question

Example code so I can start explaining this problem:

5
2


        
      

Answer 1

I just figured out that there's a 'start dragging' event in .draggable. How silly of me.

$("#window-"+id+".staticwindow.stwin").draggable({
...
    start: function(e, u){
        $(".window").removeClass('active');
        $(this).addClass('active');
    }
});

Although this approach of mine is not related to my original question anymore, atleast there's no looping. I'm not going to accept any answer because this seems to need a loop. (Although I'm slightly inclined to accept the answer by zarko-o because it lead me to think on events)

Thanks everyone for your answers!