/*Javascript for Bubble Tooltips by Alessandro Fulciniti
http://pro.html.it - http://web-graphics.com */

function enableTooltips(id) {
  var links, imgs, inputs, i, h;
  if (!document.getElementById || !document.getElementsByTagName)
    return;
  AddCss();
  h = document.createElement("span");
  h.id = "btc";
  h.setAttribute("id", "btc");
  h.style.position = "absolute";
  document.getElementsByTagName("body")[0].appendChild(h);
  if (id == null) {
    links = document.getElementsByTagName("a");
    imgs = document.getElementsByTagName("img");
    inputs = document.getElementsByTagName("input");
  }
  else {
    links = document.getElementById(id).getElementsByTagName("a");
    imgs = document.getElementById(id).getElementsByTagName("img");
    inputs = document.getElementById(id).getElementsByTagName("input");
  }
  for (i = 0; i < links.length; i++)
    Prepare(links[i]);
  for (i = 0; i < imgs.length; i++)
    Prepare(imgs[i]);
  for (i = 0; i < inputs.length; i++)
    if (inputs[i].type == "submit" || inputs[i] == "button" || inputs[i].type == "text" || inputs[i].type == "image")
      Prepare(inputs[i]);
}

function Prepare(el) {
  var tooltip, t, b, s, l, m;
  t = el.getAttribute("title");
  if (t == null || t.length == 0)
    return;
  el.removeAttribute("title");
  tooltip = CreateEl("span", "tooltip");
  s = CreateEl("span", "top");
  tooltip.appendChild(s);
  m = CreateEl("span", "middle");
  m.appendChild(document.createTextNode(t));
  tooltip.appendChild(m);
  b = CreateEl("b", "bottom");
  l = "";
/*  l = el.getAttribute("href");
  if (l != null && l.length > 28)
    l = l.substr(0, 25) + "...";*/
  b.appendChild(document.createTextNode(l));
  tooltip.appendChild(b);
  setOpacity(tooltip);
  el.tooltip = tooltip;
  el.onmouseover = showTooltip;
  el.onmouseout = hideTooltip;
  el.onmousemove = Locate;
}

function showTooltip(e) {
  document.getElementById("btc").appendChild(this.tooltip);
  Locate(e);
}

function hideTooltip(e) {
  var d = document.getElementById("btc");
  if (d.childNodes.length > 0)
    d.removeChild(d.firstChild);
}

function setOpacity(el) {
  el.style.filter = "alpha(opacity:90)";
  el.style.KHTMLOpacity = "0.90";
  el.style.MozOpacity = "0.90";
  el.style.opacity = "0.90";
}

function CreateEl(t,c) {
  var x = document.createElement(t);
  x.className = c;
  x.style.display = "block";
  return(x);
}

function AddCss() {
  var l = CreateEl("link");
  l.setAttribute("type", "text/css");
  l.setAttribute("rel", "stylesheet");
  l.setAttribute("href", "bt.css");
  l.setAttribute("media", "screen");
  document.getElementsByTagName("head")[0].appendChild(l);
}

function Locate(e) {
  var posx = 0, posy = 0;
  if (e == null)
    e = window.event;
  if (e.pageX || e.pageY) {
    posx = e.pageX;
    posy = e.pageY;
  }
  else if (e.clientX || e.clientY) {
    if (document.documentElement.scrollTop) {
      posx = e.clientX + document.documentElement.scrollLeft;
      posy = e.clientY + document.documentElement.scrollTop;
    }
    else{
      posx = e.clientX + document.body.scrollLeft;
      posy = e.clientY + document.body.scrollTop;
    }
  }
  document.getElementById("btc").style.top = (posy + 10) + "px";
  document.getElementById("btc").style.left = (posx - 20) + "px";
}