var imageFiles_1z_13 = new Array();
imageFiles_1z_13['0'] = new Array ('_images/1z_Locations.gif', '_images/1z_LocationsMouseover.gif');
imageFiles_1z_13['1'] = new Array ('_images/1z_Feedback.gif', '_images/1z_FeedbackMouseover.gif');

function image_on_1z_13 (position) {
   var doc = eval("document.image1z_13" + position);
   doc.src = imageFiles_1z_13[position][1];
}

function image_off_1z_13 (position) {
   var doc = eval("document.image1z_13" + position);
   doc.src = imageFiles_1z_13[position][0];
}