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

/* 2008-05-10: Franz Schlosser (@@Scl): 
  - support for <img> tags in addition to <a> links
  - added second param "showOnWithBubbleAttrib" (optional): 
      if "showOnWithBubbleAttrib" is set, only <a> or <img> tags are shown with 
      attrib "withBubble" is set on target element
  - added third param "noTarget" (optional): 
      if set to 1, the link target (bottom area) is not shown
*/  
function enableTooltips(id,showOnWithBubbleAttrib,noTarget){
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 || showOnWithBubbleAttrib) links=document.getElementsByTagName("a");
else links=document.getElementById(id).getElementsByTagName("a");
for(i=0;i<links.length;i++){
	if (name==null || links[i].getAttribute("withBubble"))	// @@Scl
    	Prepare(links[i],noTarget);
    }
// @@Scl: added support for <img> and <input> title attribs too!
if(id==null || showOnWithBubbleAttrib) images=document.getElementsByTagName("img");
else images=document.getElementById(id).getElementsByTagName("img");
for(i=0;i<images.length;i++){
	if (name==null || images[i].getAttribute("withBubble"))
    	Prepare(images[i],noTarget);
    }
if(id==null || showOnWithBubbleAttrib) images=document.getElementsByTagName("input");
else images=document.getElementById(id).getElementsByTagName("input");
for(i=0;i<images.length;i++){
	if (name==null || images[i].getAttribute("withBubble"))
    	Prepare(images[i],noTarget);
    }
}

function Prepare(el,noTarget){
var tooltip,t,b,s,l;
t=el.getAttribute("title");
if(t==null || t.length==0) t="link:";
el.removeAttribute("title");
tooltip=CreateEl("span","tooltip");
s=CreateEl("span","top");
s.appendChild(document.createTextNode(t));
tooltip.appendChild(s);
b=CreateEl("b","bottom");
l=el.getAttribute("href");
if (l && !noTarget) {	// @@Scl: only if href attrib is really available (not available in <img>)! 
  if(l.length>30) l=l.substr(0,27)+"...";
  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: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","/includes/css/bubbletooltips.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";
}