/*
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 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;	
// Be sure to set tipWidth wide enough for widest image
var tipWidth = 0;
var offX= 25;	// how far from mouse to show tip
var offY= 20; 
// 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

// 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('/images/Photos/tsff.jpg','Twin Springs Fruit Farm',"#A8D18B");
messages[1] = new Array('/images/Photos/br2.jpg','Blue Ridge Botanicals.',"#A8D18B");
messages[2] = new Array('/images/Photos/bro.jpg','Black Rock Orchard',"#A8D18B");
messages[3] = new Array('/images/Photos/glenville.jpg','Glenville Hollow Farms',"#A8D18B");
messages[4] = new Array('/images/Photos/toigo.jpg','Toigo Orchards',"#A8D18B");
messages[5] = new Array('/images/Photos/so.jpg','Sachiko & Grover OConnor',"#A8D18B");
messages[6] = new Array('/images/Photos/wheatland1.jpg','Wheatland Vegetable Farm',"#A8D18B");
messages[7] = new Array('/images/Photos/takomakitchens1.jpg','Takoma Kitchens.',"#A8D18B");
messages[8] = new Array('/images/Photos/potomac.jpg','Potomac Vegetable Farms',"#A8D18B");
messages[9] = new Array('/images/Photos/rolands1.jpg','Rolands Farm',"#A8D18B");
messages[10] = new Array('/images/Photos/hd2.jpg','Highfield Dairy.',"#A8D18B");
messages[11] = new Array('/images/Photos/patterson-small.jpg','Patterson Maple',"#A8D18B");
messages[12] = new Array('/images/Photos/mpf.jpg','Musachio Produce farm.',"#A8D18B");
messages[13] = new Array('/images/Photos/atwater.jpg','Atwater Breads.',"#A8D18B");
messages[14] = new Array('/images/Photos/squash1.jpg','Squash Farm',"#A8D18B");
messages[15] = new Array('/images/Photos/quail3.jpg','Quail Springs Farm',"#A8D18B");
messages[16] = new Array('/images/Photos/audias.jpg','Audias Farm',"#A8D18B");
messages[17] = new Array('/images/Photos/lafleur.jpg','Le Fleur Farm',"#A8D18B");
messages[18] = new Array('/images/Photos/cgf2.jpg','Calverts Gift Farm.',"#A8D18B");
messages[19] = new Array('/images/Photos/Betsy-and-Ben.jpg','Smith Meadows Farm',"#A8D18B");
messages[20] = new Array('/images/Photos/wpftom2.jpg','Waterpenny Farm',"#A8D18B");
messages[21] = new Array('/images/Photos/fl1.jpg','Ferry Landing Farm and Apiary',"#A8D18B");
messages[22] = new Array('/images/Photos/keswick1.jpg','Keswick Creamery',"#A8D18B");


////////////////////  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 id="tipTable"><tr><td align="center"><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 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";
	}
	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
/////////////////////////////////////////////////
var t1,t2;	// for setTimeouts
var tipOn = false;	// check if over tooltip link
function doTooltip(evt,num) {
	if (!tooltip) return;
	if (t1) clearTimeout(t1);	if (t2) clearTimeout(t2);
	tipOn = true;
	// set colors if included in messages array
	var tip = startStr + messages[num][0] + midStr +  messages[num][1] + endStr;
	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.
/////////////////////////////////////////////////////////////
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-20+window.pageYOffset: document.body.clientHeight+document.body.scrollTop;
	// check mouse position against 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)? winHt-(tpHt+offY): winHt-(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);
	tipOn = false;
}