/***********************************************
* 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
***********************************************/
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   ////////////////////
var tipFollowMouse= true;	
var tipWidth= 306;
var offX= 6;	// how far from mouse to show tip
var offY= 3; 
var tipBorderColor= "#000080";
var tipBorderWidth= 1;
var tipBorderStyle= "ridge";
var enabletip=false;

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

////////////////////////////////////////////////////////////
//  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 = document.getElementById('tipDiv');
	tipcss = tooltip.style;
	tipcss.width = tipWidth+"px";
	tipcss.borderColor = tipBorderColor;
	tipcss.borderWidth = tipBorderWidth+"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,bookid) 
{
	if (!tooltip) return;
	if (t1) clearTimeout(t1);	
	if (t2) clearTimeout(t2);
	tipOn = true;
    /////////////////////////////////////////////
	var objXML;			// The XML DOM Document object
	var strURL;			// The URL for the progress updates
	objXML= GetXmlHttpObject()
    if (objXML==null)
    {
        alert ("Your browser does not support the XMLHttpRequest object.")
        return
    }
	strURL = "/public/products/popup.aspx?ID=" + bookid;
	objXML.open("GET", strURL, false);
	objXML.send(null);
	var str = objXML.responseText.substring(objXML.responseText.indexOf("<popup>"),objXML.responseText.indexOf("</popup>")+8);
	tooltip.innerHTML = str;
    /////////////////////////////////////////////////
	if (!tipFollowMouse) positionTip(evt);
	else t1=setTimeout("tipcss.visibility='visible'",10);
}

function ShowBiggerImage(evt,bookid) 
{
	if (!tooltip) return;
	if (t1) clearTimeout(t1);	if (t2) clearTimeout(t2);
	tipOn = true;
    /////////////////////////////////////////////

	var str = '<table width="300px" border="0" cellspacing="0" cellpadding="0" style="background-color:#F8EBCB">'
    str +=    '   <tr>'
    str +=    '       <td align="center" valign="middle">'
    str +=    '             <img src="/uploads/books/' + bookid + 'l.jpg" >' 
    str +=    '         </td>'
    str +=    '    </tr>'
    str +=    '</table>'
	tooltip.innerHTML = str;
    /////////////////////////////////////////////////
	if (!tipFollowMouse) positionTip(evt);
	else t1=setTimeout("tipcss.visibility='visible'",100);
}

function GetXmlHttpObject()
{
var objXMLHttp=null

try {
objXMLHttp = new ActiveXObject("Msxml2.XMLHTTP"); //later IE
} catch (e) {
try {
objXMLHttp = new ActiveXObject("Microsoft.XMLHTTP"); //earlier IE
} catch (e) {
objXMLHttp = null;
}
}

if (objXMLHttp==null)
{
objXMLHttp=new XMLHttpRequest() //IE7, Firefox, Safari
}
return objXMLHttp
}



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);
	
	if (enabletip){
    var nondefaultpos=false
    var curX=(ns6)?evt.pageX : event.clientX+ietruebody().scrollLeft;
    var curY=(ns6)?evt.pageY : event.clientY+ietruebody().scrollTop;
    //Find out how close the mouse is to the corner of the window
    var winwidth=ie&&!window.opera? ietruebody().clientWidth : window.innerWidth-20
    var winheight=ie&&!window.opera? ietruebody().clientHeight : window.innerHeight-20

    var rightedge=ie&&!window.opera? winwidth-event.clientX-offsetfromcursorX : winwidth-evt.clientX-offsetfromcursorX
    var bottomedge=ie&&!window.opera? winheight-event.clientY-offsetfromcursorY : winheight-evt.clientY-offsetfromcursorY

    var leftedge=(offsetfromcursorX<0)? offsetfromcursorX*(-1) : -1000

    //if the horizontal distance isn't enough to accomodate the width of the context menu
    if (rightedge<tipobj.offsetWidth){
    //move the horizontal position of the menu to the left by it's width
    tipobj.style.left=curX-tipobj.offsetWidth+"px"
    nondefaultpos=true
    }
    else if (curX<leftedge)
    tipobj.style.left="5px"
    else{
    //position the horizontal position of the menu where the mouse is positioned
    tipobj.style.left=curX+offsetfromcursorX-offsetdivfrompointerX+"px"
    pointerobj.style.left=curX+offsetfromcursorX+"px"
    }

    //same concept with the vertical position
    if (bottomedge<tipobj.offsetHeight){
    tipobj.style.top=curY-tipobj.offsetHeight-offsetfromcursorY+"px"
    nondefaultpos=true
    }
    else{
    tipobj.style.top=curY+offsetfromcursorY+offsetdivfrompointerY+"px"
    pointerobj.style.top=curY+offsetfromcursorY+"px"
    }
    tipobj.style.visibility="visible"
    if (!nondefaultpos)
    pointerobj.style.visibility="visible"
    else
    pointerobj.style.visibility="hidden"
    }
}

/////////////////////////////////////////////////////////////
//  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) {
		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;
	}
	// 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>')