/*
Image w/ description tooltip- By Dynamic Web Coding (www.dyn-web.com)
Copyright 2002 by Sharon Paine
Visit http://www.dynamicdrive.com for this script
*/

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

var dom = (document.getElementById) ? true : false;
var ns5 = ((navigator.userAgent.indexOf("Gecko")>-1) && dom) ? true: false;
var ie5 = ((navigator.userAgent.indexOf("MSIE")>-1) && dom) ? true : false;
var ie6 = ((navigator.userAgent.indexOf("MSIE 6.0")>-1) && dom) ? true : false;
var ie7 = ((navigator.userAgent.indexOf("MSIE 7.0")>-1) && dom) ? true : false;
var ns4 = (document.layers && !dom) ? true : false;
var ie4 = (document.all && !dom) ? true : false;
var nodyn = (!ns5 && !ns4 && !ie4 && !ie5) ? true : false;

// resize fix for ns4
var origWidth, origHeight;
if (ns4) {
  origWidth = window.innerWidth; origHeight = window.innerHeight;
  window.onresize = function() { if (window.innerWidth != origWidth || window.innerHeight != origHeight) history.go(0); }
}

// 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= false
// 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= "#FFFFFF"; //"#DDECFF"; 
var tipBorderColor= "#808080";
var tipBorderWidth= 2;
var tipBorderStyle= "solid";
var tipPadding= 2;

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

// 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" width="100%"><img src="';
var midStr = '" border="0"></td></tr><tr><td valign="top" align="center">';
var endStr = '</td></tr></table>';

////////////////////////////////////////////////////////////
//  initTip	- initialization for tooltip.
//		Global variables for tooltip. 
//		Set styles for all but ns4. 
//		Set up mousemove capture if tipFollowMouse set true.
////////////////////////////////////////////////////////////
var tooltip, tipcss;
function initTip() {
  if (nodyn)
    return;
  tooltip = (ns4)? document.tipDiv.document: (ie4)? document.all['tipDiv']: (ie5||ns5)? document.getElementById('tipDiv'): null;
  tipcss = (ns4)? document.tipDiv: 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) {
    if (ns4)
      document.captureEvents(Event.MOUSEMOVE);
    document.onmousemove = trackMouse;
  }
}

window.onload = initTip;

/////////////////////////////////////////////////
//  doTooltip function
//			Assembles content for tooltip and writes 
//			it to tipDiv
/////////////////////////////////////////////////
// for setTimeouts
var t1 = 0;
var t2 = 0;
var tipOn = false;	// check if over tooltip link
var waitingForImage = false;
function doTooltip(evt,image,text) {
  if (!tooltip)
    return;
  if (t1)
    clearTimeout(t1);
  if (t2)
    clearTimeout(t2);
  tipOn = true;
  // set colors if included in messages array
  if (ns4) {
    var tip = '<table bgcolor="' + tipBorderColor + '" width="' + tipWidth + '" cellspacing="0" cellpadding="' + tipBorderWidth + '" border="0"><tr><td><table bgcolor="' + tipBgColor + '" width="100%" cellspacing="0" cellpadding="' + tipPadding + '" border="0"><tr><td>';
    if (image != "") {
      tip += startStr + image + midStr;
    }
    tip += '<span style="font-family:' + tipFontFamily + '; font-size:' + tipFontSize + '; color:' + tipFontColor + ';">' + text + '</span>' + endStr + '</td></tr></table></td></tr></table>';
    tooltip.write(tip);
    tooltip.close();
  } else if (ie4||ie5||ns5) {
    var tip = "";
    if (image != "") {
      tip += startStr + image + midStr;
    }
    tip += '<span style="font-family:' + tipFontFamily + '; font-size:' + tipFontSize + '; color:' + tipFontColor + ';">' + text + '</span>' + endStr;
    //tipcss.backgroundColor = tipBgColor;
    tooltip.innerHTML = tip;
  }
  if (!tipFollowMouse)
    positionTip(evt);
  else
    t1=setTimeout("tipcss.visibility='visible'",100);
}

var mouseX, mouseY;
function trackMouse(evt) {
  mouseX = (ns4||ns5)? evt.pageX: window.event.clientX + (ie6 ? document.documentElement.scrollLeft : document.body.scrollLeft);
  mouseY = (ns4||ns5)? evt.pageY: window.event.clientY + (ie6 ? document.documentElement.scrollTop : document.body.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 = (ns4||ns5)? evt.pageX: window.event.clientX + (ie6 ? document.documentElement.scrollLeft : document.body.scrollLeft);
  mouseY = (ns4||ns5)? evt.pageY: window.event.clientY + (ie6 ? document.documentElement.scrollTop : document.body.scrollTop);
  }
  
  // tooltip width and height
  var tpWd = (ns4)? tooltip.width: (ie4||ie5)? tooltip.clientWidth: tooltip.offsetWidth;
  var tpHt = (ns4)? tooltip.height: (ie4||ie5)? tooltip.clientHeight: tooltip.offsetHeight;
  // document area in view (subtract scrollbar width for ns)
  var winWd = (ns4||ns5)? window.innerWidth-20+window.pageXOffset: 
    (ie6||ie7) ? (document.documentElement.clientWidth+document.documentElement.scrollLeft) : (document.body.clientWidth+document.body.scrollLeft);
  var winHt = (ns4||ns5)? window.innerHeight-20+window.pageYOffset: 
    (ie6||ie7) ? (document.documentElement.clientHeight+document.documentElement.scrollTop) : (document.body.clientHeight+document.body.scrollTop);
  // check mouse position against tip and window dimensions
  // and position the tooltip 
  //alert(document.documentElement.clientHeight+" "+document.documentElement.scrollTop);
  //alert(mouseX + " " + mouseY + " " + tpWd + " " + tpHt + " " + winWd + " " + winHt);  
 	if (tpWd>winWd) {
    tipcss.left = "1px";
 	} else if ((mouseX+offX+tpWd)>winWd) {
    tipcss.left = (ns4)? mouseX-(tpWd+offX): mouseX-(tpWd+offX)+"px";
  } else {
    tipcss.left = (ns4)? mouseX+offX: mouseX+offX+"px";
  }
  if ((mouseY+offY+tpHt)>winHt) {
    tipcss.top = (ns4)? winHt-(tpHt+offY): winHt-(tpHt+offY)+"px";
  } else {
    tipcss.top = (ns4)? mouseY+offY: (ie7) ? (document.documentElement.scrollTop+mouseY+offY)+"px" : mouseY+offY+"px";
  }  
  //alert(tipcss.top + " " + tipcss.left);
  
  if (!tipFollowMouse)
    t1=setTimeout("tipcss.visibility='visible'",100);
}

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