/*

    Insert space before attribute (title or smth) contents to get it sucked up

*/

var tooltip_attr_name = "tooltip";
var tooltip_blank_text = "(will be opened in new window)";
var tooltip_newline_entity = "  ";
var tooltip_max_width = "220" // максимальная ширина tooltip'а в пикселах; обнулите это значение, если ширина должна быть нелимитирована

window.onload = function(e){
//alert(typeof document.createElement);
    if (document.createElement) tooltip.d();
}

tooltip = {

    t: document.createElement("DIV"),
    c: null,
    g: false,

    m: function(e){
        if (tooltip.g){
            oCanvas = document.getElementsByTagName(
            (document.compatMode && document.compatMode == "CSS1Compat") ? "HTML" : "BODY"
            )[0];
            x = window.event ? event.clientX + oCanvas.scrollLeft : e.pageX;
            y = window.event ? event.clientY + oCanvas.scrollTop : e.pageY;
            tooltip.a(x, y);
        }
    },

    d: function(){
        tooltip.t.setAttribute("id", "tooltip");
        document.body.appendChild(tooltip.t);
        a = document.all ? document.all : document.getElementsByTagName("*");
        aLength = a.length;
        for (var i = 0; i < aLength; i++){
//        if (typeof a[i]=='object') {
            tooltip_title = a[i].getAttribute("title");
            if (!tooltip_title || tooltip_title.indexOf(' ')!=0) {
                tooltip_title=false;
            }
            tooltip_alt = a[i].getAttribute("alt");
            if (!tooltip_alt || tooltip_alt.indexOf(' ')!=0) {
                tooltip_alt=false;
            }
            tooltip_blank = a[i].getAttribute("target") && a[i].getAttribute("target") == "_blank" && tooltip_blank_text;

            if (tooltip_title || tooltip_blank){
                a[i].setAttribute(tooltip_attr_name, tooltip_blank ? (tooltip_title ? tooltip_title + " " + tooltip_blank_text : tooltip_blank_text) : tooltip_title);
                if (a[i].getAttribute(tooltip_attr_name)){

// it's for IE: strange crash while doing this
//                    if (!document.all && !wnidow.opera) {
                        a[i].removeAttribute("title");
                        if (tooltip_alt && a[i].complete) a[i].removeAttribute("alt");
//                    }

                    tooltip.l(a[i], "mouseover", tooltip.s);
                    tooltip.l(a[i], "mouseout", tooltip.h);

                }
            }
            else if (tooltip_alt && a[i].complete){
                a[i].setAttribute(tooltip_attr_name, tooltip_alt);
                if (a[i].getAttribute(tooltip_attr_name)){
                    a[i].removeAttribute("alt");
                    tooltip.l(a[i], "mouseover", tooltip.s);
                    tooltip.l(a[i], "mouseout", tooltip.h);
                }
            }
            if (!a[i].getAttribute(tooltip_attr_name) && tooltip_blank){
                //
            }

//        }
        }
        document.onmousemove = tooltip.m;
        window.onscroll = tooltip.h;
    },
    s: function(e){
        d = window.event ? window.event.srcElement : e.currentTarget;
if (!d.getAttribute(tooltip_attr_name)) return;
if (tooltip.t.firstChild) tooltip.t.removeChild(tooltip.t.firstChild);
tooltip.t.appendChild(document.createTextNode(d.getAttribute(tooltip_attr_name)));

   r = d.getAttribute(tooltip_attr_name);
   re = /  /ig;
   tooltip.t.innerHTML = r.replace(re, "<br />");
    
    tooltip.c = setTimeout("tooltip.t.style.visibility = 'visible';", 1);
    tooltip.g = true;

    },

    h: function(e){
        tooltip.t.style.visibility = "hidden";
        if (!tooltip_newline_entity && tooltip.t.firstChild) tooltip.t.removeChild(tooltip.t.firstChild);
        clearTimeout(tooltip.c);
        tooltip.g = false;
        tooltip.a(-99, -99);
    },

    l: function(o, e, a){
        if (o.addEventListener) o.addEventListener(e, a, false); // was true--Opera7b workaround!
        else if (o.attachEvent) o.attachEvent("on" + e, a);
            else return null;
    },

    a: function(x, y){
        oCanvas = document.getElementsByTagName(
        (document.compatMode && document.compatMode == "CSS1Compat") ? "HTML" : "BODY"
        )[0];

        w_width = window.innerWidth ? window.innerWidth + window.pageXOffset : oCanvas.clientWidth + oCanvas.scrollLeft;
        w_height = window.innerHeight ? window.innerHeight + window.pageYOffset : oCanvas.clientHeight + oCanvas.scrollTop;

        tooltip.t.style.width = "auto";

        t_width = window.event ? tooltip.t.clientWidth : tooltip.t.offsetWidth;
        t_height = window.event ? tooltip.t.clientHeight : tooltip.t.offsetHeight;

        if (t_width > tooltip_max_width){
            tooltip.t.style.width = tooltip_max_width + "px";
            t_width = window.event ? tooltip.t.clientWidth : tooltip.t.offsetWidth;
        }

        t_extra_width = 7; // CSS padding + borderWidth;
        t_extra_height = 5; // CSS padding + borderWidth;

        tooltip.t.style.left = x + 8 + "px";
        tooltip.t.style.top = y + 8 + "px";

        while (x + t_width + t_extra_width > w_width){
            --x;
            tooltip.t.style.left = x + "px";
            t_width = window.event ? tooltip.t.clientWidth : tooltip.t.offsetWidth;
        }

        while (y + t_height + t_extra_height > w_height){
            --y;
            tooltip.t.style.top = y + "px";
            t_height = window.event ? tooltip.t.clientHeight : tooltip.t.offsetHeight;
        }
    }
}