Auto-close open overlays

GLOBAL = {
    //...
    //...
    init:function(){
        //...
        //...
        //wire up language selection .. assuming it will be on [nearly] all pages.
        $('#glb-hdr-toolbar .heading').bind('click keypress',function(e){
            if(!e.keyCode || e.keyCode == 32 || e.keyCode == 13){ //32=space, 13=enter
                var p = this.parentNode;
                $(p).toggleClass('open')
                //keep track of open overlays so that we are able to intelligently auto-close-open-overlays
                GLOBAL.overlays.pushUnique(p);
            }
        });
        
        //wire up intelligent auto-close-open-overlays
        // part of the convention, or 'magic', is that a className of "open" is used to control whether the overlay is 'open'.
        $('body').bind('click keypress',function(e){
            if(!e.keyCode || e.keyCode == 32 || e.keyCode == 13){ //32=space, 13=enter
                var targ = e.target,
                    i = 0,
                    keepOpen,
                    list = GLOBAL.overlays.list;
                ///
                while(targ && ++i<10){
                    for(var j in list){
                        if(targ == list[j]){
                            keepOpen = list[j];
                        }
                    }
                    targ = targ.parentNode;
                }
                
                for(var j in list){
                    if(keepOpen != list[j]){
                        $(list[j]).removeClass('open'); //or, we could just .hide() it... or similar... 
                    }
                }
                
            }
        });
    },
    
    //keep track of open overlays so that we are able to intelligently auto-close-open-overlays
    overlays:{
        list:[],
        pushUnique:function(o){
            var l = GLOBAL.overlays.list;
            for(var i in l){
                if(l[i] == o) return;
            }
            l.push(o);
        }
    },
    //...
    //...
};