/*Javascript for Bubble Tooltips by Alessandro Fulciniti
 http://pro.html.it - http://web-graphics.com */
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("img");
	} else {
		links = document.getElementById(id).getElementsByTagName("img");
	}
	for (i = 0; i < links.length; i++) {
		if (links[i].getAttribute("class") == "bubbleimg") {
			Prepare(links[i]);
		}
	}
}
function Prepare(el) {
	var tooltip, t,tmp, b, s, l;
	tmp = document.getElementById("html" + el.getAttribute("id"));
	if(tmp)
		t = unescape(tmp.getAttribute("value"));
	if (t == null || t.length == 0) {
		t = "no preview";
	}
	el.removeAttribute("title");
	tooltip = CreateEl("span", "tooltip");
	s = CreateEl("span", "top");
	s.innerHTML = t;
	tooltip.appendChild(s);
	b = CreateEl("b", "bottom");
	l = "";
	if (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: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", "/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";
}