function update_right(current, enabled)
{
	if (enabled)
	{
		$('#thumbs-right').unbind('click');
		
		$('#thumbs-right').click(function() {
				$('#thumb-'+(current+1)).trigger('mouseover');
			}).addClass('thumbs-right-on').removeClass('thumbs-right-off');
	} else {
		$('#thumbs-right').unbind('click').addClass('thumbs-right-off').removeClass('thumbs-right-on');
	}
}

function update_left(current, enabled)
{
	if (enabled)
	{
		$('#thumbs-left').unbind('click');
		
		$('#thumbs-left').click(function() {
				$('#thumb-'+(current-1)).trigger('mouseover');
			}).addClass('thumbs-left-on').removeClass('thumbs-left-off');	
	} else {
		$('#thumbs-left').unbind('click').addClass('thumbs-left-off').removeClass('thumbs-left-on');
	}
}


function update_thumbnav(current)
{
	if (current <= 1) {
		update_left(current, false);
		if (current < $('#bigdes').data("last"))
			update_right(current, true);
	}
	else if (current >= $('#bigdes').data("last")) {
		update_right(current, false);
		update_left(current, true);
	}
	else {
		update_left(current, true);
		update_right(current, true);
	}

}