/* javascript for Bubble Tooltips by Alessandro Fulciniti
modified by Pascal Vorsmann - 2010 */

function enableTooltips(id){
	var links,i,h;
	if(!document.getElementById || !document.getElementsByTagName) return;
	h=document.createElement("div");
	h.id="btc";
	h.setAttribute("id","btc");
	h.style.position="absolute";
	h.style.zIndex="500";
	document.getElementsByTagName("body")[0].appendChild(h);
	if(id==null){
		links=document.getElementsByTagName("area");
	} else {
		links=document.getElementById(id).getElementsByTagName("area");
	}
	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){
		t="Es wurde kein Title für diesen Tooltip hinterlegt!";
	}
	el.removeAttribute("title");
	tooltip=CreateEl("div","tooltip");
	s=CreateEl("div","top");
	tooltip.appendChild(s);
	s.innerHTML=t;
	b=CreateEl("div","bottom");
	tooltip.appendChild(b);
	el.tooltip=tooltip;
	el.onmouseover=showTooltip;
	el.onmouseout=hideTooltip;
	el.onmousemove=Locate;
}

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

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

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

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-270)+"px";
}