image1 = new Image();
image1.src = "/_img/menu_on_1.jpg";
image2 = new Image();
image2.src = "/_img/menu_on_2.jpg";
image3 = new Image();
image3.src = "/_img/menu_on_3.jpg";
image4 = new Image();
image4.src = "/_img/menu_on_4.jpg";
image5 = new Image();
image5.src = "/_img/menu_on_5.jpg";
image6 = new Image();
image6.src = "/_img/menu_on_6.jpg";
image7 = new Image();
image7.src = "/_img/menu_on_7.jpg";
image8 = new Image();
image8.src = "/_img/menu_on_8.jpg";
image9 = new Image();
image9.src = "/_img/menu_on_9.jpg";
image10 = new Image();
image10.src = "/_img/menu_on_10.jpg";

function activeLink(myObj,id) {
    myObj.src = '/_img/menu_on_'+id+'.jpg';
}
function deactiveLink(myObj,id) {
    myObj.src = '/_img/menu_off_'+id+'.jpg';
}

function deactiveLinkToActive(myObj,id) {
    myObj.src = '/_img/menu_active_'+id+'.jpg';
}