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

function enableTooltips(id) {
    if (navigator.userAgent.indexOf("MSIE 6.") != -1 && navigator.userAgent.indexOf("Opera") == -1) {
        return;
    }

    var links, i, h;

    if (!document.getElementById || !document.getElementsByTagName) 
        return;
    
    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++) {
        if (links[i].className.indexOf("tooltipLink") >= 0) {
            Prepare(links[i]);
        }
    }
}

function Prepare(el) {
    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");
    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 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";
}