// JavaScript Document
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;

if (nodyn) { event = "nope" }

var tipFollowMouse	= true;
var tipWidth		= 160;
var offX			= -80;	// how far from mouse to show tip
var offY			= -230; 
var tipFontFamily	= "Verdana, arial, helvetica, sans-serif";
var tipFontSize		= "8pt";
var tipFontColor	= "#000000";
var tipBgColor		= "#000000"; 
var tipBorderColor	= "#CCCCCC";
var tipWidth		= "150";
var tipHeight		= "200";
var tipBorderWidth	= 1;
var tipBorderStyle	= "";
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
messages[0] = new Array('img/common/books/bugs_front_cover_02.gif','2nd Edition front cover.',"#FFFFFF");
messages[1] = new Array('img/common/books/bugs_front_back_02.gif','2nd Edition back cover.',"#FFFFFF");
messages[2] = new Array('img/common/books/bugs_front_cover_03.gif','1st Edition front cover.',"#FFFFFF");
messages[3] = new Array('img/common/books/bugs_front_back_03.gif','1st Edition back cover.',"#FFFFFF");
messages[4] = new Array('img/common/books/bugs_front_cover_04.gif','3rd Edition front cover.',"#FFFFFF");
messages[5] = new Array('img/common/books/bugs_front_back_04.gif','3rd Edition back cover.',"#FFFFFF");
messages[6] = new Array('img/common/books/travel_health_back_img.jpg','Back cover.',"#FFFFFF");
messages[7] = new Array('img/common/books/lost_world_back_img.jpg','Back cover.',"#FFFFFF");
messages[8] = new Array('img/common/books/lost_world_back_img.jpg','Back cover.',"#FFFFFF");
messages[9] = new Array('img/common/books/your_child_back.gif','Back cover.',"#FFFFFF");
messages[10] = new Array('img/common/books/your_child_front_02.jpg','Front cover.',"#FFFFFF");
messages[11] = new Array('img/common/books/your_child_back_02.jpg','Back cover.',"#FFFFFF");
messages[12] = new Array('img/common/books/how_to_shit_bk01.jpg','Back cover.',"#FFFFFF");
messages[13] = new Array('img/common/books/thum_shit_01b.jpg','Front cover.',"#FFFFFF");
messages[14] = new Array('img/common/books/thum_shit_02b.gif','Back cover.',"#FFFFFF");
messages[15] = new Array('img/common/books/glimpse_img2.jpg','Back cover.',"#FFFFFF");
messages[16] = new Array('img/common/books/glimpse_img2.jpg','Back cover.',"#FFFFFF");
messages[17] = new Array('img/common/books/shit_spanish.gif','Spanish edition front cover.',"#FFFFFF");
messages[18] = new Array('img/common/books/how_to_shit_dutch.jpg','Dutch edition front cover.',"#FFFFFF");
messages[19] = new Array('img/common/books/bugs_front_cover_05.jpg','4th Edition front cover.',"#FFFFFF");
messages[20] = new Array('img/common/books/bugs_back_cover_05.jpg','4th Edition back cover.',"#FFFFFF");

// 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];
  }
}

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

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) {
		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;

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;
	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
	mouseX = (ns5)? evt.pageX: window.event.clientX + standardbody.scrollLeft;
	mouseY = (ns5)? evt.pageY: window.event.clientY + standardbody.scrollTop;
	if (tipOn) positionTip(evt);
}

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>')