/*javascript for Bubble Tooltips by Alessandro Fulciniti
- http://pro.html.it - http://web-graphics.com */
/* revised tofd:
   . not show link url, just title value
   . show only if tilte is present and not null
*/

function enableTooltips(id){
  var links,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");
  else
    links = document.getElementById(id).getElementsByTagName("a");
  for( i=0; i<links.length;i ++ ) {
    Prepare( links[i] );
  }
}

function Prepare(el){
  var tooltip,t,b,s,l;

  t = el.getAttribute("title");
  if ( t == null || t.length == 0 )
//hlr start - don't show empty hrefs with non existent or empty values
//    t = "link:";
    return;
//hlr end - don't show empty hrefs with non existent or empty values
  el.removeAttribute("title");
  tooltip = CreateEl("span","tooltip");
  s = CreateEl("span","top");
  s.appendChild(document.createTextNode(t));
  tooltip.appendChild(s);
  b = CreateEl("b","bottom");

//hlr start remove display of url
//  l = el.getAttribute("href");
//  if (l.length>30)
//    l=l.substr(0,27)+"...";
//  b.appendChild(document.createTextNode(l));
//hlr end remove display of url

  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:95)";
  el.style.KHTMLOpacity = "0.95";
  el.style.MozOpacity = "0.95";
  el.style.opacity = "0.95";
}

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","/js/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";
}