var spc_animating = false;
var spc_top_expand_position = spc_top_expand_position == null ? 'fixed' : spc_top_expand_position;

function spc_is_safari()
{
  return (navigator.userAgent.indexOf("Safari") != -1);
}

function spc_is_gecko()
{
  return (navigator.userAgent.indexOf("Gecko") != -1);
}

function spc_is_opera()
{
  return (navigator.userAgent.indexOf("Opera") != -1);
}

function spc_is_ie()
{
  return (document.all ? true : false);
}

function spc_host_blacklist()
{
  var host_blacklist = new Array();
  host_blacklist.push('.fr.tc');
  host_blacklist.push('.fr.nr');
  host_blacklist.push('.ca.gg');
  host_blacklist.push('.sg.gg');
  host_blacklist.push('.xdir.fr');
  host_blacklist.push('.xdir.org');

  for (i in host_blacklist)
    if (window.location.host.indexOf(spc_host_blacklist[i]) != -1)
      return false;
  return true;
}

function spc_top_expand(iframe_src, collapsed_height, expanded_height)
{
  if (!spc_host_blacklist())
    return false;

  var is_safari = spc_is_safari();
  var is_gecko = spc_is_gecko();
  var is_opera = spc_is_opera();
  var is_ie = spc_is_ie();


  //
  // Body check and init
  //
  var d = document;
  body_obj = d.getElementsByTagName("body")[0];
  if (!body_obj)
    return false;
  body_obj.style["marginTop"] = 0;


  //
  // Iframe, top-expand's content
  //
  iframe_obj = d.createElement("iframe");
  iframe_obj.id = "spc_top_expand";
  iframe_obj.name = iframe_obj.id;
  iframe_obj.src = iframe_src;
  iframe_obj.height = collapsed_height;
  iframe_obj.width = "100%";
  iframe_obj.marginHeight = "0";
  iframe_obj.marginWidth = "0";
  iframe_obj.hspace = "0";
  iframe_obj.vspace = "0";
  iframe_obj.scrolling = "no";
  iframe_obj.frameBorder = "0";
  iframe_obj.allowTransparency = "no";
  iframe_obj.style["border"] = "none";
  iframe_obj.style["position"] = spc_top_expand_position;
  iframe_obj.style["zIndex"] = "255";
  iframe_obj.style["top"] = "0";
  iframe_obj.style["left"] = "0";

  // Events handlers
  if (true || is_ie || is_gecko) {
    iframe_obj.onmouseover = function () {
      spc_animating = 1;
      spc_animate_top_expand(collapsed_height, expanded_height, 1);
    }

    iframe_obj.onmouseout = function () {
      spc_animating = -1;
      spc_animate_top_expand(expanded_height, collapsed_height, -1);
    }
  }


  //
  // Top div placeholder
  //
  div_obj = d.createElement("div");
  div_obj.id = "spc_top_expand_placeholder";
  div_obj.style["backgroundColor"] = "transparent";
  div_obj.style["fontSize"] = "1px";
  div_obj.style["margin"] = "0";
  div_obj.style["padding"] = "0";
  div_obj.style["height"] = collapsed_height - 1 + "px";


  //
  // (Un)Expand buttons
  //
  if (is_gecko || is_safari || is_opera) {
    var btn = d.createElement("div");
    btn.style["backgroundColor"] = "#EEEEEE";
    btn.style["font"] = "bold 1px arial, verdana, helvetica, sans-serif";
    btn.style["margin"] = "0";
    btn.style["padding"] = "0 5px";
    btn.style["position"] = spc_top_expand_position;
    btn.style["zIndex"] = "500";
    btn.style["top"] = "0";
    btn.innerHTML = '<a href="#" style="position: relative; color: #000000; text-decoration: none;" onclick="spc_toggle_top_expand('+expanded_height+','+collapsed_height+'); return false;"><img src="http://planeteray.free.fr/pub/images/fleche_bas.gif" border="0" /></a>';

    var btn_left = btn.cloneNode(true);
    btn_left.style["left"] = "50%";
    btn_left.style["marginLeft"] = "-389px";

    var btn_right = btn.cloneNode(true);
    btn_right.style["right"] = "50%";
    btn_right.style["marginRight"] = "-389px";

    // Insert buttons into div placeholder
    div_obj.appendChild(btn_left);
    div_obj.appendChild(btn_right);
  }


  div_obj.appendChild(iframe_obj);
  if (body_obj.hasChildNodes()) {
    first_child = body_obj.firstChild;
    //body_obj.insertBefore(iframe_obj, first_child);
    //body_obj.insertBefore(div_obj, first_child);
    body_obj.insertBefore(div_obj, first_child);
  } else {
    body_obj.appendChild(div_obj);
  }


  //
  // Fixed lib
  //
  if (is_ie && window.spc_top_expand_position == 'fixed')
    document.write('<scr'+'ipt src="http://planeteray.free.fr/pub/fixed.js"></scr'+'ipt>');

  return (true);
}

function spc_animate_top_expand(start, finish, inc_sign)
{
  var inc = 6 * inc_sign;
  if (spc_animating && inc_sign != spc_animating)
    return (false);

  var d = document;
  var container_obj = d.getElementById("spc_top_expand");
  if (!container_obj)
    return (false);

  var current_height = parseInt(container_obj.height);

  if ((current_height * inc_sign) < (finish * inc_sign)) {
    container_obj.height = current_height + inc;
    setTimeout("spc_animate_top_expand("+start+","+finish+","+inc_sign+")", 1);
  } else {
    spc_animating = false;
  }
}

function spc_toggle_top_expand(expanded_height, collapsed_height) {
  container_obj = document.getElementById("spc_top_expand");
  if (container_obj) {
    if (container_obj.height == collapsed_height) {
      container_obj.height = expanded_height;
      new_img_src = "http://planeteray.free.fr/pub/images/fleche_haut.gif";
    } else {
      container_obj.height = collapsed_height;
      new_img_src = "http://planeteray.free.fr/pub/images/fleche_bas.gif";
    }

    placeholder_obj = document.getElementById("spc_top_expand_placeholder");
    if (placeholder_obj) {
      var img_list = placeholder_obj.getElementsByTagName("img");
      for (i = 0; i < img_list.length; i++) {
        if (img_list[i].src.indexOf("http://planeteray.free.fr/pub/") != -1)
          img_list[i].src = new_img_src;
      }
    }
  }

  return false;
}

spc_top_expand(spc_top_expand_src, spc_top_expand_minheight, spc_top_expand_maxheight);