// ***** at_show_aux *****

function at_show_aux(parent, child)
{
  var p = document.getElementById(parent);
  var c = document.getElementById(child );

  var top  = (c["at_position"] == "y") ? p.offsetHeight+1 : 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" ]);
  var serv = this["servname"];	
  var curr_serv=urlsplithash();
  if(curr_serv=='') curr_serv='residential';
  if(curr_serv==serv) {
	  p.className=serv+"_menu_click";
  }else{
	  p.className=serv+"_menu_over";
  }
  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" ]);
  var serv = this["servname"];	
  var curr_serv=urlsplithash();
  if(curr_serv=='') curr_serv='residential';
  if(curr_serv==serv){ 
  	  document.getElementById('menu_parent_residential').className="residential_menu";
	  document.getElementById('menu_parent_managed').className="managed_menu";
	  document.getElementById('menu_parent_enterprise').className="enterprise_menu";
	  p.className=serv+"_menu_click";
  }
  else p.className=serv+"_menu";
   //c.style.visibility = "hidden";

  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;
}

// ***** at_down *****

function at_down()
{
  var p = document.getElementById(this["at_parent"]);
  var c = document.getElementById(this["at_child" ]);
  var serv = this["servname"];	
  document.getElementById('menu_parent_residential').className="residential_menu";
  document.getElementById('menu_parent_managed').className="managed_menu";
  document.getElementById('menu_parent_enterprise').className="enterprise_menu";
  p.className=serv+"_menu_click";
  /*if (c.style.visibility != "visible") at_show_aux(p.id, c.id); else*/ 
  c.style.visibility = "hidden";
  return false;
}

// ***** at_attach *****

// 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
// servname - name of menu service tab
function at_attach(showtype, position, cursor, servname)
{
  var parent = 'menu_parent_'+servname;
  var child = 'menu_child_'+servname;
  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;
  p["servname"]      = servname;
  c["servname"]      = servname;
	

  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;
      p.onmousedown  = at_down;
      c.onmouseover = at_show;
      c.onmouseout  = at_hide;
      /*break;
  }*/
}