image1 = new Image();
image1.src = "images/nav/home_mo.png";

image2 = new Image();
image2.src = "images/nav/calendar_mo.png";

image3 = new Image();
image3.src = "images/nav/competitions_mo.png";

image4 = new Image();
image4.src = "images/nav/management_mo.png";

image5 = new Image();
image5.src = "images/nav/links_mo.png";

image6 = new Image();
image6.src = "images/nav/referees_mo.png";

image7 = new Image();
image7.src = "images/nav/honourboard_mo.png";

image7 = new Image();
image7.src = "images/nav/contactus_mo.png";

function mouseOver(strId) {
    document.getElementById(strId).src = "images/nav/" + strId + "_mo.png"
}

function mouseOut(strId, strSelected) {
    if (!strSelected) { //If the optional argument is not there
        document.getElementById(strId).src = "images/nav/" + strId + ".png"
    } else {
        document.getElementById(strId).src = "images/nav/" + strId + "_select.png"
    }
}