mousedown event on element

.autocomplete-suggestion

propagates back to input field which triggers focus.

        live('autocomplete-suggestion', 'mousedown', function(e){
           if (hasClass(this, 'autocomplete-suggestion')) { // else outside click
                var v = this.getAttribute('data-val');
                that.value = v;
                o.onSelect(e, v, this);
                that.sc.style.display = 'none';
            }
        }, that.sc);

On focus the below event is triggered, because of which .autocomplete-suggestion is again visible.

if (!o.minChars) addEvent(that, 'focus', that.focusHandler);

To avoid this I have added e.preventDefault(); in live('autocomplete-suggestion', 'mousedown', function(e){...} function.
Please see if you can recreate and provide a better solution for this.