// Copyright (C) 2005-2008 Ilya S. Lyubinskiy. All rights reserved.
// Technical support: http://www.php-development.ru/
//
// YOU MAY NOT
// (1) Remove or modify this copyright notice.
// (2) Re-distribute this code or any part of it.
//     Instead, you may link to the homepage of this code:
//     http://www.php-development.ru/javascripts/dropdown.php
//
// YOU MAY
// (1) Use this code on your website.
// (2) Use this code as part of another product.
//
// NO WARRANTY
// This code is provided "as is" without warranty of any kind.
// You expressly acknowledge and agree that use of this code is at your own risk.


// ***** Popup Control *********************************************************

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

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

  var top1  = (c["at_position"] == "y") ? p.offsetHeight+2 : 0;
  var left1 = (c["at_position"] == "x") ? p.offsetWidth +2 : 0;

  
  for (; p; p = p.offsetParent)
  {
    top1  += p.offsetTop;
    left1 += p.offsetLeft;
  }
  
  var browser = navigator.appName;
  var dir_c ;
  if(browser == "Microsoft Internet Explorer"){
    if(c["direction"] == "rtl" ){
		if(navigator.appVersion.indexOf("MSIE 6.0") >= 0){
			if(screen.width == 1024) { 
				dir_c = 198;
			} else if(screen.width == 800) { 
			    dir_c = -25;
			} else {
			    dir_c = 224;
			}
		}else{
		    dir_c = 224;
		}
	}else{
		dir_c = 0;
	}
  }
  else{
    dir_c = (c["direction"] == "rtl") ? 223 : 0;
  }
  left1 -=  dir_c;
  c.style.position   = "absolute";
  c.style.top        = top1 +'px';
  c.style.left       = left1+'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" ]);
  var time_out = (c["timeout"] != "") ? parseInt(c["timeout"]) : 33;
  c["at_timeout"] = setTimeout("document.getElementById('"+c.id+"').style.visibility = 'hidden'", time_out);
}

// ***** 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_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

function at_attach(parent, child, showtype, position, cursor, direction, timeout)
{
  var p = document.getElementById(parent);
  var c = document.getElementById(child);
  
  if(p == null || c == null )
    return;
  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["direction"]   = direction;
  c["timeout"] = timeout;
  
  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;
  }
}