/***********************************************
* 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=10;
 //2) Set top scroll speed in pixels. Script auto creates a range from 0 to top speed.
var maxspeed=5;
 //3) Set to maximum width for gallery - must be less than the actual length of the image train.
var maxwidth=900;
 //4) Set to 1 for left start, 0 for right, 2 for center.
var startpos=0;
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 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)>(menuwidth-actualwidth)){
			cross_scroll.style.left=parseInt(cross_scroll.style.left)-scrollspeed+"px";
		}
	}
	lefttime=setTimeout("moveleft()",10);
}

function moveright(){
	if (loadedyes){
		movestate="right";
		if (iedom&&parseInt(cross_scroll.style.left)<0){
			cross_scroll.style.left=parseInt(cross_scroll.style.left)+scrollspeed+"px";
		}
	}
	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("imagescroller") : document.all.motioncontainer;
		if(typeof crossmain.style.maxWidth!=='undefined') crossmain.style.maxWidth=maxwidth+'px';
		menuwidth=crossmain.offsetWidth;
		cross_scroll=document.getElementById? document.getElementById("imagescroller_content") : document.all.motiongallery;
		actualwidth=document.getElementById? document.getElementById("imagescroller_content_html").offsetWidth : document.all['imagescroller_content_html'].offsetWidth;
		if (startpos) cross_scroll.style.left=(menuwidth-actualwidth)/startpos+'px';
		crossmain.onmousemove=function(e){
			motionengine(e);
		}
		
		crossmain.onmouseout=function(e){
			stopmotion(e);
		}
	}

	loadedyes=1
	if (document.body.filters)
		onresize()
	}
	window.onload=fillup;
			
	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;
}