var LastSideBar;
function SideBar_ShowHide(el)
{    
    cel = el.nextSibling;
    ChangeSideBarStatus(cel);
    /*
    if( LastSideBar!=null )
        ChangeSideBarStatus(LastSideBar);
    */
    LastSideBar = cel;
}

function ChangeSideBarStatus(cel)
{
   disp = cel.style.display;
    if( disp==null)
        disp='';
        
    if( disp=='' )
        disp='none';
    else
        disp='';
        
   cel.style.display = disp;
}