var imageFiles_og_13 = new Array();
imageFiles_og_13['0'] = new Array ('_images/og_Home.gif', '_images/og_HomeMouseover.gif');
imageFiles_og_13['1'] = new Array ('_images/og_About_Us.gif', '_images/og_About_UsMouseover.gif');
imageFiles_og_13['2'] = new Array ('_images/og_EMR_Information.gif', '_images/og_EMR_InformationMouseover.gif');
imageFiles_og_13['3'] = new Array ('_images/og_Training.gif', '_images/og_TrainingMouseover.gif');
imageFiles_og_13['4'] = new Array ('_images/og_Shielding.gif', '_images/og_ShieldingMouseover.gif');
imageFiles_og_13['5'] = new Array ('_images/og_EMR_Meters.gif', '_images/og_EMR_MetersMouseover.gif');
imageFiles_og_13['6'] = new Array ('_images/og_Mobile_Phone_Towers.gif', '_images/og_Mobile_Phone_TowersMouseover.gif');
imageFiles_og_13['7'] = new Array ('_images/og_Newsletter.gif', '_images/og_NewsletterMouseover.gif');

function image_on_og_13 (position) {
   var doc = eval("document.imageog_13" + position);
   doc.src = imageFiles_og_13[position][1];
}

function image_off_og_13 (position) {
   var doc = eval("document.imageog_13" + position);
   doc.src = imageFiles_og_13[position][0];
}