function topmenu_on(i){
	document.getElementById("mn_"+i).className = "menu_item mn_"+i+" menu_item_on";
}

function topmenu_off(i){
	document.getElementById("mn_"+i).className = "menu_item mn_"+i;
}

function menu_on(i){
	document.getElementById("menu_"+i).style.display = "block";
}

function menu_off(i){
	document.getElementById("menu_"+i).style.display = "none";
}

function li_on(i){
	document.getElementById("li_"+i).className = "li_on";
}

function li_off(i){
	document.getElementById("li_"+i).className = "";
}