$(document).ready(function(){
	for( x = 0; x < 9; x++ ) {
		$('#navItem_' + x).css({backgroundPosition: '0px 0px'});
		$("#navItem_" + x + " a").hover(function() {
			  $(this).parent().stop().animate({backgroundPosition: '(0px 39px)'}, 300, "swing");
			}, function() {
			  $(this).parent().stop().animate({backgroundPosition: '(0px 0px)'}, 300, "swing");
		});
	}
});