/***********************************************
* Image w/ description tooltip- By Dynamic Web Coding (www.dyn-web.com)
* Copyright 2002-2007 by Sharon Paine
* Visit Dynamic Drive at http://www.dynamicdrive.com/ for full source code
***********************************************/

/* IMPORTANT: Put script after tooltip div or 
put tooltip div just before </BODY>. */

var dom = (document.getElementById) ? true : false;
var ns5 = (!document.all && dom || window.opera) ? true : false;
var ie5 = ((navigator.userAgent.indexOf("MSIE") > -1) && dom) ? true : false;
var ie4 = (document.all && !dom) ? true : false;
var nodyn = (!ns5 && !ie4 && !ie5 && !dom) ? true : false;

var origWidth, origHeight;

// avoid error of passing event object in older browsers
if (nodyn) { event = "nope" }

///////////////////////  CUSTOMIZE HERE   ////////////////////
// settings for tooltip 
// Do you want tip to move when mouse moves over link?
var tipFollowMouse = true;
// Be sure to set tipWidth wide enough for widest image
var tipWidth = 160;
var offX = 20; // how far from mouse to show tip
var offY = 12;
var tipFontFamily = "Verdana, arial, helvetica, sans-serif";
var tipFontSize = "8pt";
// set default text color and background color for tooltip here
// individual tooltips can have their own (set in messages arrays)
// but don't have to
var tipFontColor = "#000000";
var tipBgColor = "#DDECFF";
var tipBorderColor = "#000080";
var tipBorderWidth = 3;
var tipBorderStyle = "ridge";
var tipPadding = 4;

// tooltip content goes here (image, description, optional bgColor, optional textcolor)
var messages = new Array();
// multi-dimensional arrays containing: 
// image and text for tooltip
// optional: bgColor and color to be sent to tooltip
messages[0] = new Array('../duck2.gif', '', "#FFFFFF");
//messages[1] = new Array('duck2.gif','Here is a duck on a light blue background.',"#DDECFF");
//messages[2] = new Array('duck2.gif','Test description','black','white');

////////////////////  END OF CUSTOMIZATION AREA  ///////////////////

// preload images that are to appear in tooltip
// from arrays above
if (document.images) {
    var theImgs = new Array();
    for (var i = 0; i < messages.length; i++) {
        theImgs[i] = new Image();
        theImgs[i].src = messages[i][0];
    }
}

// to layout image and text, 2-row table, image centered in top cell
// these go in var tip in doTooltip function
// startStr goes before image, midStr goes between image and text
var startStr = '<table width="' + tipWidth + '"><tr><td align="center" width="100%"><img src="';
var midStr = '" border="0"></td></tr><tr><td valign="top">';
var endStr = '</td></tr></table>';

////////////////////////////////////////////////////////////
//  initTip	- initialization for tooltip.
//		Global variables for tooltip. 
//		Set styles
//		Set up mousemove capture if tipFollowMouse set true.
////////////////////////////////////////////////////////////
var tooltip, tipcss;
function initTip() {
    if (nodyn) return;
    tooltip = (ie4) ? document.all['tipDiv'] : (ie5 || ns5) ? document.getElementById('tipDiv') : null;
    tipcss = tooltip.style;
    if (ie4 || ie5 || ns5) {	// ns4 would lose all this on rewrites
        //tipcss.width = tipWidth+"px";
        tipcss.fontFamily = tipFontFamily;
        tipcss.fontSize = tipFontSize;
        tipcss.color = tipFontColor;
        tipcss.backgroundColor = tipBgColor;
        tipcss.borderColor = tipBorderColor;
        tipcss.borderWidth = tipBorderWidth + "px";
        tipcss.padding = tipPadding + "px";
        tipcss.borderStyle = tipBorderStyle;
    }
    if (tooltip && tipFollowMouse) {
        document.onmousemove = trackMouse;
    }
}

window.onload = initTip;
// for Mozilla browsers

if (document.addEventListener) {
    document.addEventListener("DOMContentLoaded", initTip, false);
}
/////////////////////////////////////////////////
//  doTooltip function
//			Assembles content for tooltip and writes 
//			it to tipDiv
/////////////////////////////////////////////////
var t1, t2; // for setTimeouts
var tipOn = false; // check if over tooltip link
function doTooltip(evt, num, path) {
    if (!tooltip) return;
    if (t1) clearTimeout(t1); if (t2) clearTimeout(t2);
    tipOn = true;
    // set colors if included in messages array
    if (messages[num][2]) var curBgColor = messages[num][2];
    else curBgColor = tipBgColor;
    if (messages[num][3]) var curFontColor = messages[num][3];
    else curFontColor = tipFontColor;
    if (ie4 || ie5 || ns5) {
        var tip = startStr + path + midStr + '<span style="font-family:' + tipFontFamily + '; font-size:' + tipFontSize + '; color:' + curFontColor + ';">' + messages[num][1] + '</span>' + endStr;
        tipcss.backgroundColor = curBgColor;
        tooltip.innerHTML = tip;
    }
    if (!tipFollowMouse) positionTip(evt);
    else t1 = setTimeout("tipcss.visibility='visible'", 100);
}

var mouseX, mouseY;
function trackMouse(evt) {
    standardbody = (document.compatMode == "CSS1Compat") ? document.documentElement : document.body //create reference to common "body" across doctypes
    mouseX = (ns5) ? evt.pageX : window.event.clientX + standardbody.scrollLeft;
    mouseY = (ns5) ? evt.pageY : window.event.clientY + standardbody.scrollTop;
    if (tipOn) positionTip(evt);
}

/////////////////////////////////////////////////////////////
//  positionTip function
//		If tipFollowMouse set false, so trackMouse function
//		not being used, get position of mouseover event.
//		Calculations use mouseover event position, 
//		offset amounts and tooltip width to position
//		tooltip within window.
/////////////////////////////////////////////////////////////
function positionTip(evt) {
    if (!tipFollowMouse) {
        standardbody = (document.compatMode == "CSS1Compat") ? document.documentElement : document.body
        mouseX = (ns5) ? evt.pageX : window.event.clientX + standardbody.scrollLeft;
        mouseY = (ns5) ? evt.pageY : window.event.clientY + standardbody.scrollTop;
    }
    // tooltip width and height
    var tpWd = (ie4 || ie5) ? tooltip.clientWidth : tooltip.offsetWidth;
    var tpHt = (ie4 || ie5) ? tooltip.clientHeight : tooltip.offsetHeight;
    // document area in view (subtract scrollbar width for ns)
    var winWd = (ns5) ? window.innerWidth - 20 + window.pageXOffset : standardbody.clientWidth + standardbody.scrollLeft;
    var winHt = (ns5) ? window.innerHeight - 20 + window.pageYOffset : standardbody.clientHeight + standardbody.scrollTop;
    // check mouse position against tip and window dimensions
    // and position the tooltip 
    if ((mouseX + offX + tpWd) > winWd)
        tipcss.left = mouseX - (tpWd + offX) + "px";
    else tipcss.left = mouseX + offX + "px";
    if ((mouseY + offY + tpHt) > winHt)
        tipcss.top = winHt - (tpHt + offY) + "px";
    else tipcss.top = mouseY + offY + "px";
    if (!tipFollowMouse) t1 = setTimeout("tipcss.visibility='visible'", 100);
}

function hideTip() {
    if (!tooltip) return;
    t2 = setTimeout("tipcss.visibility='hidden'", 100);
    tipOn = false;
}

document.write('<div id="tipDiv" style="position:absolute; visibility:hidden; z-index:100"></div>')