//Written by Nathan Faubion: http://n-son.com
//Use this or edit how you want, just give me
//some credit
function jsScroller (o, w, h) {
	if(o != null){
		var self = this;
		var list = o.getElementsByTagName("div");
		for (var i = 0; i < list.length; i++) {
			if (list[i].className.indexOf("Scroller-Container") > -1) {
				o = list[i];
			}
		}
		
		//Private methods
		this._setPos = function (x, y) {
			if (x < this.viewableWidth - this.totalWidth) 
				x = this.viewableWidth - this.totalWidth;
			if (x > 0) x = 0;
			if (y < this.viewableHeight - this.totalHeight) 
				y = this.viewableHeight - this.totalHeight;
			if (y > 0) y = 0;
			this._x = x;
			this._y = y;
			with (o.style) {
				left = this._x +"px";
				top  = this._y +"px";
			}
		};
		
		//Public Methods
		this.reset = function () {
			this.content = o;
			this.totalHeight = o.offsetHeight;
			this.totalWidth	 = o.offsetWidth;
			this._x = 0;
			this._y = 0;
			with (o.style) {
				left = "0px";
				top  = "0px";
			}
		};
		this.scrollBy = function (x, y) {
			this._setPos(this._x + x, this._y + y);
		};
		this.scrollTo = function (x, y) {
			this._setPos(-x, -y);
		};
		this.stopScroll = function () {
			if (this.scrollTimer) window.clearInterval(this.scrollTimer);
		};
		this.startScroll = function (x, y) {
			this.stopScroll();
			this.scrollTimer = window.setInterval(
				function(){ self.scrollBy(x, y); }, 40
			);
		};
		this.swapContent = function (c, w, h) {
			o = c;
			var list = o.getElementsByTagName("div");
			for (var i = 0; i < list.length; i++) {
				if (list[i].className.indexOf("Scroller-Container") > -1) {
					o = list[i];
				}
			}
			if (w) this.viewableWidth  = w;
			if (h) this.viewableHeight = h;
			this.reset();
		};
		
		//variables
		this.content = o;
		this.viewableWidth  = w;
		this.viewableHeight = h;
		this.totalWidth	 = o.offsetWidth;
		this.totalHeight = o.offsetHeight;
		this.scrollTimer = null;
		this.reset();
	}
};