/***********************************************
* 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 maximum width for gallery if motioncontainer width is not set.
var maxwidth = 1000;
//4) Set to 1 for left start, 0 for right, 2 for center.
var startpos = 0;

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

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

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 / 2;
		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);
			handles('hidden');
		}
	}

	loadedyes = 1;
	if (document.body.filters)
		onresize();

	// starting speed and direction
	scrollspeed = 2;
	moveleft();
}
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;
}

function handles(what) {
	lefthandle = document.getElementById ? document.getElementById("LeftHandle") : document.all.LeftHandle;
	righthandle = document.getElementById ? document.getElementById("RightHandle") : document.all.RightHandle;
	if (lefthandle !== null && righthandle !== null)
	{
		lefthandle.style.visibility = what;
		righthandle.style.visibility = what;
	}
}