/***********************************************
* CMotion Image Gallery- © Dynamic Drive DHTML code library (www.dynamicdrive.com)
* Visit http://www.dynamicDrive.com for source code
* Last updated Mar 15th, 04'. Added "End of Gallery" message.
* This copyright notice must stay intact for legal use
* Modified here for continuous motion by jscheuer1
***********************************************/

var restarea=400 //1) width of the "neutral" area in the center of the gallery in px
var maxspeed=4 //2) top scroll speed in pixels. Script auto creates a range from 0 to top speed.

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

var leftbound
var rightbound
var speedfactor

var iedom=document.all||document.getElementById
var scrollspeed=0
var movestate=""

var actualwidth=''
var mainobjoffset
var cross_scroll_0, cross_scroll_1, ns_scroll
var loadedyes=0

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 (iedom&&loadedyes){
		movestate="left"
		if (parseInt(cross_scroll_0.style.left)<(-actualwidth))
			cross_scroll_0.style.left=parseInt(cross_scroll_1.style.left)+actualwidth+"px"
		if (parseInt(cross_scroll_1.style.left)<(-actualwidth))
			cross_scroll_1.style.left=parseInt(cross_scroll_0.style.left)+actualwidth+"px"
		cross_scroll_0.style.left=parseInt(cross_scroll_0.style.left)-scrollspeed+"px"
		cross_scroll_1.style.left=parseInt(cross_scroll_1.style.left)-scrollspeed+"px"
	}
	lefttime=setTimeout("moveleft()",20)
}

function moveright(){
	if (iedom&&loadedyes){
		movestate="right"
		if (parseInt(cross_scroll_0.style.left)>0)
			cross_scroll_1.style.left=parseInt(cross_scroll_0.style.left)-actualwidth+"px"
		if (parseInt(cross_scroll_1.style.left)>0)
			cross_scroll_0.style.left=parseInt(cross_scroll_1.style.left)-actualwidth+"px"
		cross_scroll_0.style.left=parseInt(cross_scroll_0.style.left)+scrollspeed+"px"
		cross_scroll_1.style.left=parseInt(cross_scroll_1.style.left)+scrollspeed+"px"
	}
	righttime=setTimeout("moveright()",20)
}

function motionengine(e){
	var dsocx=(window.pageXOffset)? pageXOffset: ietruebody().scrollLeft;
	var dsocy=(window.pageYOffset)? pageYOffset : ietruebody().scrollTop;
	var curposy=window.event? event.clientX : e.clientX? e.clientX: ""
	curposy-=mainobjoffset-dsocx
	if (curposy>rightbound){
		scrollspeed=Math.floor((curposy-rightbound)*speedfactor)+1;
		if (window.righttime) 
			clearTimeout(righttime);
		if (movestate!="left") 
			moveleft();
	}
	else if (curposy<leftbound){
		scrollspeed=Math.floor((leftbound-curposy)*speedfactor)+1;
		if (window.lefttime) 
			clearTimeout(lefttime);
		if (movestate!="right") 
			moveright();
	}
	else
	scrollspeed=0
}

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

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

function fillup(){
	if (iedom){
		crossmain=document.getElementById? document.getElementById("motioncontainer") : document.all.motioncontainer
		menuwidth=parseInt(crossmain.style.width)
		leftbound=(menuwidth-restarea)/2;
		rightbound=(menuwidth+restarea)/2;
		speedfactor = 2 * maxspeed / (menuwidth-restarea+1);	
		mainobjoffset=getposOffset(crossmain, "left")
		cross_scroll_0=document.getElementById? document.getElementById("motiongallery_0") : document.all.motiongallery_0
		cross_scroll_1=document.createElement('div')
		cross_scroll_1.style.position='absolute'
		cross_scroll_1.style.whiteSpace='nowrap'
		extra=document.createElement('nobr')
		extra.innerHTML=document.all? document.all['trueContainer'].innerHTML : document.getElementById("trueContainer").innerHTML
		cross_scroll_1.appendChild(extra)
		crossmain.appendChild(cross_scroll_1)
		actualwidth=document.all? cross_scroll_0.offsetWidth : document.getElementById("trueContainer").offsetWidth
		cross_scroll_1.style.left=actualwidth+'px'
		crossmain.onmousemove=function(e){
			motionengine(e)
		}
		crossmain.onmouseover=function(e){
			motionengine(e)
		}
		crossmain.onmouseout=function(e){
			// vv keep on scrolling >
				scrollspeed = 1;
				if (window.lefttime) 
					clearTimeout(lefttime)
				if (window.righttime) 
					clearTimeout(righttime)
				moveleft();
			//stopmotion(e)
			// << vv keep on scrolling
		}
	}
	loadedyes=1
	
	// vv autostart >
	scrollspeed=1;
	moveleft();
	// << vv autostart 
}

window.onload=fillup