function ScrollBox(scrollname, div_name, up_name, down_name)
{
	this.div_name = div_name;
	this.name = scrollname;
	this.scrollCursor = 0;
	this.speed = 5
	this.timeoutID = 0;
	this.div_obj = null;
	this.up_name = up_name;
	this.dn_name = down_name;

	{
		if (document.getElementById)
		{
			div_obj = document.getElementById(this.div_name);	
			if (div_obj)
				this.div_obj = div_obj;

			div_up_obj = document.getElementById(this.up_name);
			div_dn_obj = document.getElementById(this.dn_name);
			if (div_up_obj && div_dn_obj)
			{
				div_up_obj.onmouseover = function(){ eval(scrollname + ".scrollUp();")	};
				div_up_obj.onmouseout = function(){ eval(scrollname + ".stopScroll();") };
				div_dn_obj.onmouseover = function(){ eval(scrollname + ".scrollDown();") };
				div_dn_obj.onmouseout = function(){ eval(scrollname + ".stopScroll();") };
			}
		}
	}

	this.stopScroll = function()
	{
		clearTimeout(this.timeoutID);
	}

	this.scrollUp = function()
	{
		if (this.div_obj)
		{
			this.scrollCursor = (this.scrollCursor - this.speed) < 0 ? 0 : this.scrollCursor - this.speed;
			this.div_obj.scrollTop = this.scrollCursor;
			this.timeoutID = setTimeout(this.name + ".scrollUp()", 60);
		}
	}
	
	this.scrollDown = function()
	{
		if (this.div_obj)
		{
			this.scrollCursor += this.speed;
			this.div_obj.scrollTop = this.scrollCursor;
			
			if (this.div_obj.scrollTop == this.scrollCursor)
			{
				this.timeoutID = setTimeout(this.name + ".scrollDown()", 60);
			}
			else
			{
				this.scrollCursor = this.div_obj.scrollTop;
			}
		}
	}

	this.resetScroll = function()
	{
		if (this.div_obj)
		{
			this.div_obj.scrollTop = 0;
			this.scrollCursor = 0;
		}
	}
}