Easy to use on your AS3 project //import the library import AS3tooltip.Tooltip; //create the tooltip var tooltip = new Tooltip(); addChild(tooltip); //registering the movieClip, button , or dynamic textField //and also their tooltip to be displayed //example : tooltip.addTooltip(mc1,"MovieClip 1" ); tooltip.addTooltip(mc2,"MovieClip 2" ); //OPTIONAL setting ; //if you do not assign these value it will be automatically assigned with default value. tooltip.setAlpha(1); tooltip.setDelay(500); tooltip.setBoundaries(area_mc.x,area_mc.y,area_mc.x+area_mc.width,area_mc.y+area_mc.height); //finish //if the toolip is not needed anymore, call destroy function tooltip.destroy();