function Showlist(i,nb) {

	var stitle = document.getElementById(nb);
	var sbo = document.getElementById(i);

    if (sbo.style.display == 'none') {
        sbo.style.display = '';
		stitle.className = 'jianhao';
    }
    else {
        sbo.style.display = 'none';
		stitle.className = 'jiahao';
    }
	
	
}