Extjs如何在网格面板标题列中捕获鼠标事件

Is it possible that to catch the mouse event in panel header column? I implemented "headerclick: function(header, column, e, t,eOpts){......}" to trigger an action, but i just want to catch the event of mouse down and mouse up on the header click. Is there any solution?Is it possible that to catch the mouse event in