if(document.images) {
	var navimg1 = new Image();
	navimg1.src = "/images/mp/asp_mtn_nava.gif";
	
	var navimg2 = new Array(7);
	for (var i = 0; i < navimg2.length; i++) {
		ic = (i < 9)? '0' + (i+1): ''+(i+1); 
		navimg2[i] = new Image();
		navimg2[i].src = "/images/mp/aspmtnnavb_"+ic+".gif"
	}
}	

function mpUp(index) {
	if (document.images)
		document.images['nav'].src = navimg2[index].src
}

function mpDown() {
	if (document.images)
		document.images['nav'].src = navimg1.src
}