function init_navi()
{
	$("a[naviFold]").click(
		function(){
			var a = $(this);
			var ul = a.next();

			if(ul.attr('state')=='open')
			{
				ul.attr("state","");
				ul.slideUp();
			}else{
				ul.attr("state","open");
				ul.slideDown();
				lastUL = ul;
				
			}
		}
	);
}