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 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	= true;	
var tipWidth 	 	= 350;
var offX		= 8;	// how far from mouse to show tip
var offY	 	= 12; 
var tipFontFamily 	= "Verdana, arial, helvetica, sans-serif";
var tipFontSize		= "8pt";
var tipFontColor	= "#4D5B6A";
var tipBgColor 		= "#D8EAFE";
var tipBorderColor 	= "#4D5B6A";
var tipBorderWidth 	= 1;
var tipBorderStyle 	= "solid";
var tipPadding		 	= 4;

// preload images to be placed in tooltip
var img1 = new Image(100,100);	
img1.src = "fill.gif";
var img2 = new Image(90,45);			
img2.src = "fill.gif";

// variables for tooltip content 
var tip1 = "Click to view the new snappier tooltip which uses clipping to roll into and out of view"
var tip2 = 'This option can be turned off by setting tipFollowMouse to false in the cusomization area of the code.';
var tip3 = '<p align="center"><img src="fill.gif" border="0"></p>';
var tip4 = '<img src="fill.gif" border="0"><br>Some text can go here too.';


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

////////////////////////////////////////////////////////////
//  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.
//			Call positionTip function from here if tipFollowMouse
//			is set to false.
//////////////////////////////////////////////////////////////
var t1,t2;	// for setTimeouts
var tipOn = false;	// check if over tooltip link
function doTooltip(evt,txt) {
	if (!tooltip) return;
	if (t1) clearTimeout(t1);	if (t2) clearTimeout(t2);
	tipOn = true;
	if (ns4) {
		//bgcolor="' + tipBgColor + '"
		tip = '<table bgcolor="' + tipBorderColor + '" width="' + tipWidth + '" cellspacing="0" cellpadding="' + tipBorderWidth + '" border="0"><tr><td><table width="100%" cellspacing="0" cellpadding="' + tipPadding + '" border="0"><tr><td><span style="font-family:' + tipFontFamily + '; font-size:' + tipFontSize + '; color:' + tipFontColor + ';">' + txt  + '</span></td></tr></table></td></tr></table>';
		tooltip.write(tip);
		tooltip.close();
	} else if (ie4||ie5||ns5) {
		tip = txt;
	 	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 + document.body.scrollLeft;
	mouseY = (ns4||ns5)? evt.pageY: window.event.clientY + 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 space available.
/////////////////////////////////////////////////////////////
function positionTip(evt) {
	if (!tipFollowMouse) {
		mouseX = (ns4||ns5)? evt.pageX: window.event.clientX + document.body.scrollLeft;
		mouseY = (ns4||ns5)? evt.pageY: window.event.clientY + 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: document.body.clientWidth+document.body.scrollLeft;
	var winHt = (ns4||ns5)? window.innerHeight+window.pageYOffset: document.body.clientHeight+document.body.scrollTop;

	// check mouse position, tip and window dimensions
	// and position the tooltip 
	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)? mouseY-(tpHt+offY): mouseY-(tpHt+offY)+"px";
	else tipcss.top = (ns4)? mouseY+offY: mouseY+offY+"px";
	if (!tipFollowMouse) t1=setTimeout("tipcss.visibility='visible'",100);
}

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

// opens sub-window 
var newWin = null;
function getSubWin(url) {
 	if (newWin && !newWin.closed) newWin.focus();
	newWin = window.open(url, "subwin", "menubar,resizable,scrollbars,height=400,width=550,top=60,left=100");
}

// close window when this page unloads
function closeWin() {
	if (newWin && !newWin.closed) window.newWin.close();
}	
window.onunload=closeWin;