function mOver(img) {
	document.images[img].src = eval(img + "_on").src;
}

function mOut(img) {
	document.images[img].src = eval(img + "_off").src;
}

/*var what_off = new Image(); what_off.src = "images/nv_what.gif";
var what_on = new Image(); what_on.src = "images/nv_what_on.gif";
var sponsorship_off = new Image(); sponsorship_off.src = "images/nv_sponsorship.gif";
var sponsorship_on = new Image(); sponsorship_on.src = "images/nv_sponsorship_on.gif";
var events_off = new Image(); events_off.src = "images/nv_events.gif";
var events_on = new Image(); events_on.src = "images/nv_events_on.gif";
var news_off = new Image(); news_off.src = "images/nv_news.gif";
var news_on = new Image(); news_on.src = "images/nv_news_on.gif";
var facilities_off = new Image(); facilities_off.src = "images/nv_facilities.gif";
var facilities_on = new Image(); facilities_on.src = "images/nv_facilities_on.gif";
var registration_off = new Image(); registration_off.src = "images/nv_registration.gif";
var registration_on = new Image(); registration_on.src = "images/nv_registration_on.gif";
var schools_off = new Image(); schools_off.src = "images/nv_schools.gif";
var schools_on = new Image(); schools_on.src = "images/nv_schools_on.gif";*/