/*script per i bubble tooltips - http://pro.html.it */

function enableTooltips(id){
	var links,i,h,jj;
	var elementi = new Array('img', 'input', 'textarea', 'a', 'em', 'strong', 'label', 'div', 'tr', 'table', 'td', 'th', 'span');
	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);
	for (jj=0; jj < elementi.length; jj++) {		
		if (id==null) links=document.getElementsByTagName(elementi[jj]);
		else links=document.getElementById(id).getElementsByTagName(elementi[jj]);
		//alert('links.length:' + links.length + ' elementi[' + jj + ']=' + elementi[jj]);
		for (i=0;i<links.length;i++) {
			if (links[i].getAttribute('class') == 'baloon') Prepare(links[i]);
			//Prepare(links[i]);
		}		
	}
}

function Prepare(el){
	var tooltip,t,b,s,l = '';
	/*if (el.hasAttribute('title')) { */
	
	if (el.getAttribute('title')) {
		t=el.getAttribute('title');
		if(t.length>500) t=t.substr(0,520)+'...'; //Lunghezza title
		//alert(el.parentNode.tagName); 
		el.removeAttribute('title');
		tooltip=CreateEl('span','tooltip');
		s=CreateEl('span','top');
		s.appendChild(document.createTextNode(t));
		tooltip.appendChild(s);
		b=CreateEl('b','bottom');
		
			/*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);
	//enableAlphaImages();//Add here Add Here Add Here
	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','css/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-210)+'px';
}