/***********************************************
* 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= 0;
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= "#FFFFDD";
var tipBorderColor= "#000000";
var tipBorderWidth= 0;
var tipBorderStyle= "ridge";
var tipPadding= 0;

// 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



// 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 ><tr><td align="center" ><img src="';
var midStr = '"width="300", 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= 0;
        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;

/////////////////////////////////////////////////
//  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,messages) {
    if (!tooltip) return;
    if (t1) clearTimeout(t1);    if (t2) clearTimeout(t2);
    tipOn = true;
    // set colors if included in messages array
curBgColor = tipBgColor;
curFontColor = tipFontColor;
    if (ie4||ie5||ns5) {
        var tip = startStr + messages + midStr + '<span style="font-family:' + tipFontFamily + '; font-size:' + tipFontSize + '; color:' + curFontColor + ';">' + '' + '</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) {
        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>')