var baseSubNav = 0;
var numberOfSubNavLinks = 0;
var bottomLinkMoverLeft = 0;

$(function() {

	$('#subnav_prev_link img').fadeTo('fast', 0.2);
	$('#subnav_prev_link').click(movePreviousSubNav);
	$('#subnav_next_link').click(moveNextSubNav);
	
	if (!isNaN(parseInt($('#subnav').css('left'))))
		baseSubNav = parseInt($('#subnav').css('left'));
	bottomLinkMoverLeft = baseSubNav;
	
	$('#subnav li').each(function() { numberOfSubNavLinks++; });
})

function moveNextSubNav()
{
	if ((bottomLinkMoverLeft-249) <= -((numberOfSubNavLinks-3) * 249))
		$('#subnav_next_link img').fadeTo('fast', 0.2);	
	if (bottomLinkMoverLeft > -((numberOfSubNavLinks-3) * 249))
	{
		bottomLinkMoverLeft-=249;
		$('#subnav').animate({'left': (bottomLinkMoverLeft)+'px'});	
	}
	$('#subnav_prev_link img').fadeTo('fast', 1);
}

function movePreviousSubNav()
{	
	if ((bottomLinkMoverLeft+249) >= baseSubNav)
		$('#subnav_prev_link img').fadeTo('fast', 0.2);	   	
	if (bottomLinkMoverLeft < baseSubNav)
	{
		bottomLinkMoverLeft+=249;
		$('#subnav').animate({'left': (bottomLinkMoverLeft)+'px'});
	}
	$('#subnav_next_link img').fadeTo('fast', 1);
	
}