// ----- SHOW AUXILIAR (posição e outros atributos)-----

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-10) +'px';
  c.style.width = "150px";
  c.style.backgroundColor = "#fff";
  c.style.padding = "10px";
  c.style.zIndex = "999";
  c.style.border = "1px solid #DFDFDF";

  //if (isie) {c.style.left = (left-345) +'px';} else {c.style.left = (left-355) +'px';}
  
  c.style.visibility = "visible";
}

// ----- Show -----

function at_show()
{

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

  at_show_aux(p.id, c.id);

  clearTimeout(c["at_timeout"]);
}

// ----- Hide -----

function at_hide()
{
 
  c = document.getElementById(this["at_child"]);

  c["at_timeout"] = setTimeout("document.getElementById('"+c.id+"').style.visibility = 'hidden'", 0);
}

// ----- Click -----

function at_click()
{
  p = document.getElementById(this["at_parent"]);
  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;
}

/* No attach que esta no HTML voce pode passar os seguintes parametros */

// parent   - id do elemento
// child    - id do elemento filiho (que ira aparecer, como dropdown)
// showtype - "click" = Caso queira ativar o dropdown usando click
//            "hover" = Caso queira ativar o dropdown usando hover
// position - "x" = para o filho aparecer do lado do parent
//            "y" = tpara o filho aparecer embaixo do parent

function at_attach(parent, child, showtype, position, cursor)
{
  p = document.getElementById(parent);
  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;
  }
}