var imageFiles_na_13 = new Array();
imageFiles_na_13['0'] = new Array ('_images/na_HOME.gif', '_images/na_HOMEMouseover.gif');
imageFiles_na_13['1'] = new Array ('_images/na_CAMPS.gif', '_images/na_CAMPSMouseover.gif');
imageFiles_na_13['2'] = new Array ('_images/na_STAFF.gif', '_images/na_STAFFMouseover.gif');
imageFiles_na_13['3'] = new Array ('_images/na_YOUTH.gif', '_images/na_YOUTHMouseover.gif');
imageFiles_na_13['4'] = new Array ('_images/na_COLLEGE.gif', '_images/na_COLLEGEMouseover.gif');
imageFiles_na_13['5'] = new Array ('_images/na_PRO.gif', '_images/na_PROMouseover.gif');
imageFiles_na_13['6'] = new Array ('_images/na_TESTIMONIALS.gif', '_images/na_TESTIMONIALSMouseover.gif');
imageFiles_na_13['7'] = new Array ('_images/na_LINKS.gif', '_images/na_LINKSMouseover.gif');
imageFiles_na_13['8'] = new Array ('_images/na_ARTICLES.gif', '_images/na_ARTICLESMouseover.gif');
imageFiles_na_13['9'] = new Array ('_images/na_PHOTOS.gif', '_images/na_PHOTOSMouseover.gif');
imageFiles_na_13['10'] = new Array ('_images/na_STORE.gif', '_images/na_STOREMouseover.gif');
imageFiles_na_13['11'] = new Array ('_images/na_CONTACT.gif', '_images/na_CONTACTMouseover.gif');

function image_on_na_13 (position) {
   var doc = eval("document.imagena_13" + position);
   doc.src = imageFiles_na_13[position][1];
}

function image_off_na_13 (position) {
   var doc = eval("document.imagena_13" + position);
   doc.src = imageFiles_na_13[position][0];
}