var imagePath = "images/tooltiparrow.gif";

function addwarning() {
    var thealinks = document.getElementsByTagName("area");
    if (!thealinks) { return; }

    for (var x = 0; x != thealinks.length; x++) {

        if (thealinks[x].className == "addToolTip") {
            thealinks[x].setAttribute("tooltiptext", thealinks[x].title);
            thealinks[x].removeAttribute("title");
            thealinks[x].onmouseover = function gomouseover() { ddrivetip(this.getAttribute("tooltiptext")) };
            thealinks[x].onmouseout = function gomouseout() { hideddrivetip(); };
        }
    }
}

var offsetfromcursorX = -317; //Customize x offset of tooltip
var offsetfromcursorY = 23; //Customize y offset of tooltip

var offsetdivfrompointerX = 13; //Customize x offset of tooltip DIV relative to pointer image
var offsetdivfrompointerY = 13; //Customize y offset of tooltip DIV relative to pointer image. Tip: Set it to (height_of_pointer_image-1).

document.write('<div id="theToolTip"></div>'); //write out tooltip DIV
document.write('<img id="ToolTipPointer" src="' + imagePath + '">'); //write out pointer image

var ie = document.all;
var ns6 = document.getElementById && !document.all;
var enabletip = false;
if (ie || ns6) {
    var tipobj = document.all ? document.all["theToolTip"] : document.getElementById ? document.getElementById("theToolTip") : "";
}

var pointerobj = document.all ? document.all["ToolTipPointer"] : document.getElementById ? document.getElementById("ToolTipPointer") : "";

function ietruebody() {
    return (document.compatMode && document.compatMode != "BackCompat") ? document.documentElement : document.body;
}

function ddrivetip(thetext, thewidth, thecolor) {
    if (ns6 || ie) {
        if (typeof thewidth !== "undefined") { tipobj.style.width = thewidth + "px"; }
        if (typeof thecolor !== "undefined" && thecolor !== "") { tipobj.style.backgroundColor = thecolor; }
        tipobj.innerHTML = thetext;
        enabletip = true;
        return false;
    }
}

function positiontip(e) {
    if (enabletip) {
        var nondefaultpos = false;
        var curX = (ns6) ? e.pageX : event.clientX + ietruebody().scrollLeft;
        var curY = (ns6) ? e.pageY : event.clientY + ietruebody().scrollTop;
        //Find out how close the mouse is to the corner of the window
        var winwidth = ie && !window.opera ? ietruebody().clientWidth : window.innerWidth - 20;
        var winheight = ie && !window.opera ? ietruebody().clientHeight : window.innerHeight - 20;

        var rightedge = ie && !window.opera ? winwidth - event.clientX - offsetfromcursorX : winwidth - e.clientX - offsetfromcursorX;
        var bottomedge = ie && !window.opera ? winheight - event.clientY - offsetfromcursorY : winheight - e.clientY - offsetfromcursorY;

        var leftedge = (offsetfromcursorX < 0) ? offsetfromcursorX * (-1) : -1000;

        //if the horizontal distance isn't enough to accomodate the width of the context menu
        if (rightedge < tipobj.offsetWidth) {
            //move the horizontal position of the menu to the left by it's width
            tipobj.style.left = curX - tipobj.offsetWidth + "px";
            nondefaultpos = true;
        }
        else if (curX < leftedge)
        { tipobj.style.left = "5px"; }
        else {
            //position the horizontal position of the menu where the mouse is positioned
            tipobj.style.left = curX + offsetfromcursorX - offsetdivfrompointerX + "px";
            pointerobj.style.left = curX + offsetfromcursorX + "px";
        }

        //same concept with the vertical position
        if (bottomedge < tipobj.offsetHeight) {
            tipobj.style.top = curY - tipobj.offsetHeight - offsetfromcursorY + "px";
            nondefaultpos = true;
        }
        else {
            tipobj.style.top = curY + offsetfromcursorY + offsetdivfrompointerY + "px";
            pointerobj.style.top = curY + offsetfromcursorY + "px";
        }
        tipobj.style.visibility = "visible";
        if (!nondefaultpos) { pointerobj.style.visibility = "visible"; }
        else {
            pointerobj.style.visibility = "hidden";
        }
    }
}

function hideddrivetip() {
    if (ns6 || ie) {
        enabletip = false;
        tipobj.style.visibility = "hidden";
        pointerobj.style.visibility = "hidden";
        tipobj.style.left = "-1000px";
        tipobj.style.backgroundColor = '';
        tipobj.style.width = '';
    }
}

document.onmousemove = positiontip;
addwarning();