//<script type="text/javascript">

/***********************************************
* 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= 240;
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('test.gif','Test description','black','white');
messages[0] = new Array('pictures/productphotos/1.jpg','&Alpha;&Nu;&Tau;&Lambda;&Iota;&Alpha; &Kappa;&Tau;&Eta;&Sigma;&Iota;&Beta;&Iota;&Omicron;&Upsilon;, 280 &pi;.&Chi;.');
messages[1] = new Array('pictures/productphotos/2.jpg','&Alpha;&Nu;&Upsilon;&Psi;&Omega;&Tau;&Iota;&Kappa;&Eta; &Mu;&Eta;&Chi;&Alpha;&Nu;&Eta; &Eta;&Rho;&Omega;&Nu;&Omicron;&Sigma;,<br>65 &mu;.&Chi;.');
messages[2] = new Array('pictures/productphotos/3.jpg','&Kappa;&Omicron;&Chi;&Lambda;&Iota;&Alpha;&Sigma; &Tau;&Omicron;&Upsilon; &Alpha;&Rho;&Chi;&Iota;&Mu;&Eta;&Delta;&Omicron;&Upsilon;&Sigma;, 287 &pi;.&Chi;.');
messages[3] = new Array('pictures/productphotos/4.jpg','&Alpha;&Nu;&Upsilon;&Psi;&Omega;&Tau;&Iota;&Kappa;&Omicron;&Sigma; &Mu;&Eta;&Chi;&Alpha;&Nu;&Iota;&Sigma;&Mu;&Omicron;&Sigma; &Nu;&Epsilon;&Rho;&Omicron;&Upsilon;<br>&Pi;&Epsilon;&Rho;&Alpha;&Chi;&Omega;&Rho;&Alpha;&Sigma;, 300 &pi;.&Chi;.');
messages[4] = new Array('pictures/productphotos/5.jpg','&Mu;&Eta;&Chi;&Alpha;&Nu;&Iota;&Sigma;&Mu;&Omicron;&Sigma; &Tau;&Omega;&Nu; &Alpha;&Nu;&Tau;&Iota;&Kappa;&Upsilon;&Theta;&Eta;&Rho;&Omega;&Nu;,<br>80 &pi;.&Chi;.');
messages[5] = new Array('pictures/productphotos/6.jpg','&Pi;&Rho;&Omicron;&Pi;&Lambda;&Alpha;&Sigma;&Mu;&Alpha; &Epsilon;&Pi;&Iota;&Gamma;&Rho;&Alpha;&Phi;&Eta;&Sigma; &Epsilon;&Lambda;&Epsilon;&Upsilon;&Sigma;&Iota;&Nu;&Alpha;&Sigma;,<br>350 &pi;.&Chi;.');
messages[6] = new Array('pictures/productphotos/7.jpg','&Kappa;&Iota;&Nu;&Eta;&Tau;&Omicron; &Alpha;&Upsilon;&Tau;&Omicron;&Mu;&Alpha;&Tau;&Omicron; &Eta;&Rho;&Omega;&Nu;&Omicron;&Sigma;, 65 &mu;.&Chi;.');
messages[7] = new Array('pictures/productphotos/1.jpg','CTESIBIUS" SUCTION PUMP, 280 BC');
messages[8] = new Array('pictures/productphotos/2.jpg','HERO"S HOIST, 65 AD');
messages[9] = new Array('pictures/productphotos/3.jpg','ARCHIMEDES" SCREW, 287 BC');
messages[10] = new Array('pictures/productphotos/4.jpg','THE PERAHORA WATER WHEEL, 300 BC');
messages[11] = new Array('pictures/productphotos/5.jpg','ANTIKYTHERA MECHANISM, 80 BC');
messages[12] = new Array('pictures/productphotos/6.jpg','PLASTER CAST OF ELEFSINA<br>INSCRIPTION, 350 BC');
messages[13] = new Array('pictures/productphotos/7.jpg','HERO"S MOBILE AUTOMATON, 65 AD');

////////////////////  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><tr><td align="center" width="100%"><img src="';// width="' + tipWidth + '"  THIS WIDTH IS FOR TABLE
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;

/////////////////////////////////////////////////
//  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
	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 + messages[num][0] + 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) {
		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>')

//</script>