var currentMenu = 0;

if (document.images) {
	var rub_off = new Array()
	var rub_on = new Array()
	for(i=1; i<14; i++){
		rub_off[i]  = new Image(); rub_off[i].src  = "img/bt_nav" + i + "_f.gif";
		rub_on[i]  = new Image(); rub_on[i].src  = "img/bt_nav" + i + "_o.gif";
	}
}

function over_rub(i,st){
	if (document.images){
		document.images['rub' + i].src = rub_on[i].src;
	}
	window.status = st;
}

function out_rub(i){
	if (document.images){
		if (i != currentMenu)
			document.images['rub' + i].src = rub_off[i].src;
	}
	window.status = " ";
}

function menuSynchro(menuIndex) {
	if (document.images) {
		for(i=1; i<14; i++) {
			if (menuIndex==i){
				document.images['rub' + i].src = rub_on[i].src;
			} else {
				document.images['rub' + i].src = rub_off[i].src;
			}
		}
		currentMenu = menuIndex;
	}
}