function at_show_aux(parent, child)

{

  var p = document.getElementById(parent);

  var c = document.getElementById(child );



  var top  = (c["at_position"] == "y") ? p.offsetHeight+2 : 0;

  var left = (c["at_position"] == "x") ? p.offsetWidth +2 : 0;



  for (; p; p = p.offsetParent)

  {

    top  += p.offsetTop;

    left += p.offsetLeft;

  }



  c.style.position   = "absolute";

  c.style.top        = top +'px';

  c.style.left       = left+'px';

  c.style.visibility = "visible";

}



// ***** at_show *****



function at_show()

{

  var p = document.getElementById(this["at_parent"]);

  var c = document.getElementById(this["at_child" ]);



  at_show_aux(p.id, c.id);

  clearTimeout(c["at_timeout"]);

}



// ***** at_hide *****



function at_hide()

{

  var p = document.getElementById(this["at_parent"]);

  var c = document.getElementById(this["at_child" ]);



  c["at_timeout"] = setTimeout("document.getElementById('"+c.id+"').style.visibility = 'hidden'", 333);

}



// ***** at_click *****



function at_click()

{

  var p = document.getElementById(this["at_parent"]);

  var c = document.getElementById(this["at_child" ]);



  if (c.style.visibility != "visible") at_show_aux(p.id, c.id); else c.style.visibility = "hidden";

  return false;

}



function at_attach(parent, child, showtype, position, cursor)

{

  var p = document.getElementById(parent);

  var c = document.getElementById(child);



  p["at_parent"]     = p.id;

  c["at_parent"]     = p.id;

  p["at_child"]      = c.id;

  c["at_child"]      = c.id;

  p["at_position"]   = position;

  c["at_position"]   = position;



  c.style.position   = "absolute";

  c.style.visibility = "hidden";



  if (cursor != undefined) p.style.cursor = cursor;



  switch (showtype)

  {

    case "click":

      p.onclick     = at_click;

      p.onmouseout  = at_hide;

      c.onmouseover = at_show;

      c.onmouseout  = at_hide;

      break;

    case "hover":

      p.onmouseover = at_show;

      p.onmouseout  = at_hide;

      c.onmouseover = at_show;

      c.onmouseout  = at_hide;

      break;

  }

}