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;
  }
  
  var target = document.getElementById(parent);
  if(target.className == ""){
    target.className = "selected_h";
  }

  c.style.position   = "absolute";
  c.style.top        = (top + 1) +'px';
  if(parent == "menu_102340"){
    c.style.left       = (left - 1) +'px';
  } else if(parent == "menu_88876"){
	  c.style.left       = (left - 1) +'px';
  } else if(parent == "menu_89208"){
	  c.style.left       = (left - 226) +'px';
  } else if(parent == "menu_88904"){
	  c.style.left       = (left - 163) +'px';
  } else {
    c.style.left       = (left - 1) +'px';
  }
  c.style.visibility = "visible";
}

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"]);
}

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'", 0);

  var target = p.id;
  var target_hide = document.getElementById(target);
  if(target_hide.className == "selected_h"){
    p.className = "";     
  }
}

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;
}

// PARAMETERS:
// parent   - id of the parent html element
// child    - id of the child  html element that should be droped down
// showtype - "click" = drop down child html element on mouse click
//            "hover" = drop down child html element on mouse over
// position - "x" = display the child html element to the right
//            "y" = display the child html element below
// cursor   - omit to use default cursor or specify CSS cursor name

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;
  }
}