var imageFiles_40_63 = new Array();
imageFiles_40_63['0'] = new Array ('_images/40_Home.gif', '_images/40_HomeMouseover.gif');
imageFiles_40_63['1'] = new Array ('_images/40_About_Us.gif', '_images/40_About_UsMouseover.gif');
imageFiles_40_63['2'] = new Array ('_images/40_Contact_Us.gif', '_images/40_Contact_UsMouseover.gif');

function image_on_40_63 (position) {
   var doc = eval("document.image40_63" + position);
   doc.src = imageFiles_40_63[position][1];
}

function image_off_40_63 (position) {
   var doc = eval("document.image40_63" + position);
   doc.src = imageFiles_40_63[position][0];
}