var imageFiles_nw_40 = new Array();
imageFiles_nw_40['0'] = new Array ('_images/nw_Home.gif', '_images/nw_HomeMouseover.gif');
imageFiles_nw_40['1'] = new Array ('_images/nw_About_JustFly_.gif', '_images/nw_About_JustFly_Mouseover.gif');
imageFiles_nw_40['2'] = new Array ('_images/nw_Contact_Us.gif', '_images/nw_Contact_UsMouseover.gif');
imageFiles_nw_40['3'] = new Array ('_images/nw_Fun_Photos.gif', '_images/nw_Fun_PhotosMouseover.gif');

function image_on_nw_40 (position) {
   var doc = eval("document.imagenw_40" + position);
   doc.src = imageFiles_nw_40[position][1];
}

function image_off_nw_40 (position) {
   var doc = eval("document.imagenw_40" + position);
   doc.src = imageFiles_nw_40[position][0];
}