var scroll_height = 90;


function TextScroll(scrollname, div_name, up_name, down_name, scrollbar, scrollheight)
{
    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;
				this.div_obj.style.overflow = 'hidden';
			}
			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();") };
				
												
				/*div_up_obj.onmousedown = function() { eval(scrollname + ".scrollUp();") };
				div_up_obj.onmouseup = function() { eval(scrollname + ".stopScroll();") };
				div_up_obj.onmouseout = function() { eval(scrollname + ".stopScroll();") };
				
				div_dn_obj.onmousedown = function() { eval(scrollname + ".scrollDown();") };
				div_dn_obj.onmouseup = function() { eval(scrollname + ".stopScroll();") };
				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;
		}
	}	
	
	//124 110
	/**/
	if ( (document.getElementById(scrollheight)) && (scroll_height>0) )
	{
		if (document.getElementById(scrollheight).offsetHeight < document.getElementById(this.div_name).offsetHeight)
		{
			document.getElementById(this.up_name).style.display = "none";
			document.getElementById(this.dn_name).style.display = "none";
		}
		else
		{
			document.getElementById(this.up_name).style.display = "inline";
			document.getElementById(this.dn_name).style.display = "inline";
		}
	}
	else
	{
		document.getElementById(this.up_name).style.display = "inline";
		document.getElementById(this.dn_name).style.display = "inline";
	}
	
}