$(document).ready(function(){
	var m = parseInt($('#nav_ndsport').css('width')) / ndsnewspages;
	var mcalc = ndsnewspages-1;
	var mv = false;
	$('#nav_ndsport_prev').click(function() {
		var cm = parseInt($('#nav_ndsport').css('margin-left'));
		if (isNaN(cm)) cm = 0;
		if ((cm != 0) && (cm != 0 - m) && (cm != 0 - m * mcalc)) return false;

		if (cm < 0) {
			$('#nav_ndsport').animate({ marginLeft:cm+m}, 'normal');
			if (cm + m == 0) set_nav_ndsport(1);
			else if (cm + m == 0 - m) set_nav_ndsport(2);
			else if (cm + m == 0 - m * 2) set_nav_ndsport(3);
		} else {
			$('#nav_ndsport').animate({ marginLeft:0 - m * mcalc}, 'fast');
			set_nav_ndsport(ndsnewspages);
		}
	});
	$('#nav_ndsport_next').click(function() {
		var cm = parseInt($('#nav_ndsport').css('margin-left'));
		if (isNaN(cm)) cm = 0;
		if ((cm != 0) && (cm != 0 - m) && (cm != 0 - m * mcalc)) return false;

		if (cm > 0 - m * mcalc) {
			$('#nav_ndsport').animate({ marginLeft:cm - m}, 'normal');
			if (cm - m == 0) set_nav_ndsport(1);
			else if (cm - m == 0 - m) set_nav_ndsport(2);
			else if (cm - m == 0 - m * 2) set_nav_ndsport(3);
		} else {
			$('#nav_ndsport').animate({ marginLeft:0}, 'fast');
			set_nav_ndsport(1);
		}
	});
	$('#nav_ndsport_1').click(function() {
		$('#nav_ndsport').animate({ marginLeft:'0'}, 'fast');
		set_nav_ndsport(1);
	});
	$('#nav_ndsport_2').click(function() {
		$('#nav_ndsport').animate({ marginLeft:'-'+m}, 'fast');
		set_nav_ndsport(2);
	});
	$('#nav_ndsport_3').click(function() {
		$('#nav_ndsport').animate({ marginLeft:'-'+(m * 2)}, 'fast');
		set_nav_ndsport(3);
	});

	function set_nav_ndsport(hi) {
		if (hi == 1) {
			$('#nav_ndsport_1 > *').attr('src',$('#nav_ndsport_1 > *').attr('src').replace(/_lo./,"_hi."));
			$('#nav_ndsport_2 > *').attr('src',$('#nav_ndsport_2 > *').attr('src').replace(/_hi./,"_lo."));
			$('#nav_ndsport_3 > *').attr('src',$('#nav_ndsport_3 > *').attr('src').replace(/_hi./,"_lo."));
		} else if (hi == 2) {
			$('#nav_ndsport_1 > *').attr('src',$('#nav_ndsport_1 > *').attr('src').replace(/_hi./,"_lo."));
			$('#nav_ndsport_2 > *').attr('src',$('#nav_ndsport_2 > *').attr('src').replace(/_lo./,"_hi."));
			$('#nav_ndsport_3 > *').attr('src',$('#nav_ndsport_3 > *').attr('src').replace(/_hi./,"_lo."));
		} else if (hi == 3) {
			$('#nav_ndsport_1 > *').attr('src',$('#nav_ndsport_1 > *').attr('src').replace(/_hi./,"_lo."));
			$('#nav_ndsport_2 > *').attr('src',$('#nav_ndsport_2 > *').attr('src').replace(/_hi./,"_lo."));
			$('#nav_ndsport_3 > *').attr('src',$('#nav_ndsport_3 > *').attr('src').replace(/_lo./,"_hi."));
		}
	}
});