//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>';
var endofgallerymsg='';


//function to enlarge image. Change as desired.
function enlargeimage(path, optWidth, optHeight)
{
	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);
}

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

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

var 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;
};

function setImage(image_file)
{
	el = document.getElementById('id_preview');
	el.src = image_file;
}