/***********************************************
* CMotion Image Gallery- © Dynamic Drive DHTML code library (www.dynamicdrive.com)
* Visit http://www.dynamicDrive.com for source code
* This copyright notice must stay intact for legal use
* Modified for autowidth and optional starting positions in
* http://www.dynamicdrive.com/forums/showthread.php?t=11839 by jschuer1 8/5/06
***********************************************/

 //1) Set width of the "neutral" area in the center of the gallery.
var restarea=6;
 //2) Set top scroll speed in pixels. Script auto creates a range from 0 to top speed.
var maxspeed=7;
 //3) Set to maximum width for gallery - must be less than the actual length of the image train.
var maxwidth=1000;
 //4) Set to 1 for left start, 0 for right, 2 for center.
var startpos=0;
 //5) Set message to show at end of gallery. Enter "" to disable message.
var endofgallerymsg='<span style="font-size: 11px;">End of Gallery</span>';

function enlargeimage(path, optWidth, optHeight){ //function to enlarge image. Change as desired.
var actualWidth=typeof optWidth!="undefined" ? optWidth : "600px" //set 600px to default width
var actualHeight=typeof optHeight!="undefined" ? optHeight : "500px" //set 500px to  default height
var winattributes="width="+actualWidth+",height="+actualHeight+",resizable=yes"
window.open(path,"", winattributes)
}

var posStore = "0px";
var caption;

function displayImageAction(object)
{ 
	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();
	var loadingOverlay = document.getElementById("loadingOverlay");
	var loadingImage = document.getElementById("loadingImage");
	var displayImageContainer = document.getElementById("displayImageContainer");
	var displayImage = document.getElementById("displayImage");
	var displayImageCaption = document.getElementById("displayImageCaption");
	
	var thumbnail = getThumbnail(object);
	var imageURL = thumbnail.getAttribute("src");
	imageURL = imageURL.replace(/thumbnails/,"images");

	var displayImage = document.getElementById("displayImage");

	if (displayImage.getAttribute("src")!=imageURL)
	{
		displayImage.setAttribute("alt", "Loading...");
		displayImageCaption.innerHTML = "Loading...";
		loadingOverlay.style.left = getLeft(displayImageContainer) + 3 + "px";
		loadingOverlay.style.top = getTop(displayImageContainer) + 3 + "px";
		loadingOverlay.style.width = displayImageContainer.clientWidth + "px";
		loadingOverlay.style.height = displayImageContainer.clientHeight + "px";
		loadingImage.style.display = 'block';
		loadingOverlay.style.display = "block";
		loadingImage.style.top = ((displayImageContainer.clientHeight - loadingImage.clientHeight) / 2) + "px";
		loadingImage.style.left = ((displayImageContainer.clientWidth - loadingImage.clientWidth) / 2) + 'px';

		caption = thumbnail.getAttribute("caption");

		displayImage.src = imageURL;
	}
	
	cross_scroll.style.left=posStore;
}

function getThumbnail(object)
{
	var thumb;
	var nodes = object.childNodes;
	
	for (var i=0; i<nodes.length; i++)
	{
		if (nodes[i].nodeType==1)
		{
			thumb =  object.childNodes[i];
		}
	}
	
	return thumb;
}

function displayImageAction_Complete()
{
	var loadingOverlay = document.getElementById("loadingOverlay");
	loadingOverlay.style.display = "none";

	var displayImageContainer = document.getElementById("displayImageContainer");
	var displayImage = document.getElementById("displayImage");
	var displayImageCaption = document.getElementById("displayImageCaption");
	displayImage.setAttribute("alt", caption);
	displayImageCaption.innerHTML = caption;

	displayImageContainer.style.width = displayImage.width + "px";
	displayImageCaption.style.width = displayImage.width + "px";
	cross_scroll.style.left=posStore;
}

function initialise()
{
	fillup();
	var displayImage = document.getElementById("displayImage");	
	displayImage.onload=displayImageAction_Complete;
	displayImageAction_Complete();
	displayImageAction(document.getElementById("initialImage"));
}

function getLeft(object)
{
    var thisLeft = object.offsetLeft;
    
    if (object.offsetParent)
    {
    	thisLeft += getLeft(object.offsetParent);
    }
    
    return thisLeft;
}

function getTop(object)
{
    var thisLeft = object.offsetTop;
    
    if (object.offsetParent)
    {
    	thisLeft += getTop(object.offsetParent);
    }
    
    return thisLeft;
}

/* Lifted from Lightbox */
//
// getPageScroll()
// Returns array with x,y page scroll values.
// Core code from - quirksmode.org
//
function getPageScroll(){

	var yScroll;

	if (self.pageYOffset) {
		yScroll = self.pageYOffset;
	} else if (document.documentElement && document.documentElement.scrollTop){	 // Explorer 6 Strict
		yScroll = document.documentElement.scrollTop;
	} else if (document.body) {// all other Explorers
		yScroll = document.body.scrollTop;
	}

	arrayPageScroll = new Array('',yScroll) 
	return arrayPageScroll;
}



//
// getPageSize()
// Returns array with page width, height and window width, height
// Core code from - quirksmode.org
// Edit for Firefox by pHaez
//
function getPageSize(){
	
	var xScroll, yScroll;
	
	if (window.innerHeight && window.scrollMaxY) {	
		xScroll = document.body.scrollWidth;
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}
	
	var windowWidth, windowHeight;
	if (self.innerHeight) {	// all except Explorer
		windowWidth = self.innerWidth;
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	
	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else { 
		pageHeight = yScroll;
	}

	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){	
		pageWidth = windowWidth;
	} else {
		pageWidth = xScroll;
	}


	arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
	return arrayPageSize;
}
/* End of code oifted from lightbox */

////NO NEED TO EDIT BELOW THIS LINE////////////

var iedom=document.all||document.getElementById, scrollspeed=0, movestate='', actualwidth='', cross_scroll, ns_scroll, statusdiv, loadedyes=0, lefttime, righttime;

function ietruebody(){
return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body;
}

function creatediv(){
statusdiv=document.createElement("div")
statusdiv.setAttribute("id","statusdiv")
document.body.appendChild(statusdiv)
statusdiv=document.getElementById("statusdiv")
statusdiv.innerHTML=endofgallerymsg
}

function positiondiv(){
var mainobjoffset=getposOffset(crossmain, "left"),
menuheight=parseInt(crossmain.offsetHeight),
mainobjoffsetH=getposOffset(crossmain, "top");
statusdiv.style.left=mainobjoffset+(menuwidth/2)-(statusdiv.offsetWidth/2)+"px";
statusdiv.style.top=menuheight+mainobjoffsetH+"px";
}

function showhidediv(what){
if (endofgallerymsg!="") {
positiondiv();
statusdiv.style.visibility=what;
}
}

function getposOffset(what, offsettype){
var totaloffset=(offsettype=="left")? what.offsetLeft: what.offsetTop;
var parentEl=what.offsetParent;
while (parentEl!=null){
totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
parentEl=parentEl.offsetParent;
}
return totaloffset;
}


function moveleft(){
if (loadedyes){
movestate="left";
cross_scroll.style.left=posStore;
if (iedom&&parseInt(cross_scroll.style.left)>(menuwidth-actualwidth)){
cross_scroll.style.left=parseInt(cross_scroll.style.left)-scrollspeed+"px";
showhidediv("hidden");
}
else
showhidediv("visible");
}
posStore = cross_scroll.style.left;
lefttime=setTimeout("moveleft()",10);
}

function moveright(){
if (loadedyes){
movestate="right";
cross_scroll.style.left=posStore;
if (iedom&&parseInt(cross_scroll.style.left)<0){
cross_scroll.style.left=parseInt(cross_scroll.style.left)+scrollspeed+"px";
showhidediv("hidden");
}
else
showhidediv("visible");
}
posStore = cross_scroll.style.left;
righttime=setTimeout("moveright()",10);
}

function motionengine(e){
var mainobjoffset=getposOffset(crossmain, "left"),
dsocx=(window.pageXOffset)? pageXOffset: ietruebody().scrollLeft,
dsocy=(window.pageYOffset)? pageYOffset : ietruebody().scrollTop,
curposy=window.event? event.clientX : e.clientX? e.clientX: "";
curposy-=mainobjoffset-dsocx;
var leftbound=(menuwidth-restarea)/2;
var rightbound=(menuwidth+restarea)/2;
if (curposy>rightbound){
scrollspeed=(curposy-rightbound)/((menuwidth-restarea)/2) * maxspeed;
clearTimeout(righttime);
if (movestate!="left") moveleft();
}
else if (curposy<leftbound){
scrollspeed=(leftbound-curposy)/((menuwidth-restarea)/2) * maxspeed;
clearTimeout(lefttime);
if (movestate!="right") moveright();
}
else
scrollspeed=0;
}

function contains_ns6(a, b) {
if (b!==null)
while (b.parentNode)
if ((b = b.parentNode) == a)
return true;
return false;
}

function stopmotion(e){
if (!window.opera||(window.opera&&e.relatedTarget!==null))
if ((window.event&&!crossmain.contains(event.toElement)) || (e && e.currentTarget && e.currentTarget!= e.relatedTarget && !contains_ns6(e.currentTarget, e.relatedTarget))){
clearTimeout(lefttime);
clearTimeout(righttime);
movestate="";
}
}

function fillup(){
if (iedom){
crossmain=document.getElementById? document.getElementById("motioncontainer") : document.all.motioncontainer;
if(typeof crossmain.style.maxWidth!=='undefined')
crossmain.style.maxWidth=maxwidth+'px';
menuwidth=crossmain.offsetWidth;
cross_scroll=document.getElementById? document.getElementById("motiongallery") : document.all.motiongallery;
actualwidth=document.getElementById? document.getElementById("trueContainer").offsetWidth : document.all['trueContainer'].offsetWidth;
if (startpos)
cross_scroll.style.left=(menuwidth-actualwidth)/startpos+'px';
crossmain.onmousemove=function(e){
motionengine(e);
}

crossmain.onmouseout=function(e){
stopmotion(e);
showhidediv("hidden");
}
}
loadedyes=1
if (endofgallerymsg!=""){
creatediv();
positiondiv();
}
if (document.body.filters)
onresize()
}
//window.onload=fillup;
window.onload=initialise;

onresize=function(){
if (typeof motioncontainer!=='undefined'&&motioncontainer.filters){
motioncontainer.style.width="0";
motioncontainer.style.width="";
motioncontainer.style.width=Math.min(motioncontainer.offsetWidth, maxwidth)+'px';
}
menuwidth=crossmain.offsetWidth;
cross_scroll.style.left=startpos? (menuwidth-actualwidth)/startpos+'px' : 0;
}