var imageFiles_nw_21 = new Array();
imageFiles_nw_21['0'] = new Array ('_images/nw_Home.gif', '_images/nw_HomeMouseover.gif');
imageFiles_nw_21['1'] = new Array ('_images/nw_About_JustFly_.gif', '_images/nw_About_JustFly_Mouseover.gif');
imageFiles_nw_21['2'] = new Array ('_images/nw_Contact_Us.gif', '_images/nw_Contact_UsMouseover.gif');
imageFiles_nw_21['3'] = new Array ('_images/nw_Videos.gif', '_images/nw_VideosMouseover.gif');

function image_on_nw_21 (position) {
   var doc = eval("document.imagenw_21" + position);
   doc.src = imageFiles_nw_21[position][1];
}

function image_off_nw_21 (position) {
   var doc = eval("document.imagenw_21" + position);
   doc.src = imageFiles_nw_21[position][0];
}