//左边菜单显示当前页面
function focusmenu(id) {
	var curId = document.getElementById(id);
	curId.className = "lfmubt_1";
}

//个人菜单显示当前页面
function personmenu(id) {
	var curId = document.getElementById(id);
	curId.className = "big_nav_on";
}


//头部菜单显示当前页面
function headmenu(id) {
	var curId = document.getElementById(id);
	curId.className = "cp_musize15";
}