var imageFiles_nw_13 = new Array();
imageFiles_nw_13['0'] = new Array ('_images/nw_Home.gif', '_images/nw_HomeMouseover.gif');
imageFiles_nw_13['1'] = new Array ('_images/nw_About_JustFly_.gif', '_images/nw_About_JustFly_Mouseover.gif');
imageFiles_nw_13['2'] = new Array ('_images/nw_Contact_Us.gif', '_images/nw_Contact_UsMouseover.gif');
imageFiles_nw_13['3'] = new Array ('_images/nw_Videos.gif', '_images/nw_VideosMouseover.gif');

function image_on_nw_13 (position) {
   var doc = eval("document.imagenw_13" + position);
   doc.src = imageFiles_nw_13[position][1];
}

function image_off_nw_13 (position) {
   var doc = eval("document.imagenw_13" + position);
   doc.src = imageFiles_nw_13[position][0];
}