var flag_out = false;
function showMenu (id)
{
   document.getElementById(id+'_li').className = 'act';
   document.getElementById(id+'_li').onmouseover = function () {this.className = flag_out ? '' : 'act'}
   document.getElementById(id+'_li').onmouseout = function () {this.className = ''; flag_out = true}
   document.getElementById(id+'_div').onmouseover = function () {flag_out = false}
}

function overmenu(diz) {diz.className="act"}
function outmenu(diz) {diz.className=""}

function overspan(diz) {diz.className="act"}
function outspan(diz) {diz.className=""}
function overlast(diz) {diz.className="lastact"}
function outlast(diz) {diz.className="last"}