var oScrollbar;
var timer; 

$(document).ready(function() {

	oScrollbar = $('#content_twocolumns');
	oScrollbar.tinyscrollbar();

	$('div.moveup').live('mousedown', function() {
		scroll_timer(160);
	});                
	$('div.movedown').live('mousedown', function() {
		scroll_timer(-160);
	});                
	
	$('div.moveup, div.movedown').live('mouseup mouseleave', function() {
		clearTimeout(timer)
	});                
})

function scroll_timer(speed)
{
	timer = setTimeout("scroll_timer("+eval(speed)+")",100);
	scroll_move(speed);
}


function scroll_move(speed)
{
	oEvent = new Object();					
	oEvent.wheelDeltaX = 0;
	oEvent.detail = 0;
	oEvent.wheelDelta = speed;
	oEvent.wheelDeltaY = speed;	
	oScrollbar.wheel(oEvent);	
}