Menu: Check if submenu is already open and if so, don't call open again. Fixes Firefox bug where a mouseover of an icon adjusted the position of a submenu by a half pixel
Menu: Check if submenu is already open and if so, don't call open again. Fixes Firefox bug where a mouseover of an icon adjusted the position of a submenu by a half pixel

GrayYoung/jQuery.UI.Extension,GrayYoung/jQuery.UI.Extension