var imageFiles_5_13 = new Array();
imageFiles_5_13['0'] = new Array ('_images/5_Home.gif', '_images/5_HomeMouseover.gif');
imageFiles_5_13['1'] = new Array ('_images/5_About_Us.gif', '_images/5_About_UsMouseover.gif');
imageFiles_5_13['2'] = new Array ('_images/5_Email_Us.gif', '_images/5_Email_UsMouseover.gif');
imageFiles_5_13['3'] = new Array ('_images/5_Directions.gif', '_images/5_DirectionsMouseover.gif');

function image_on_5_13 (position) {
   var doc = eval("document.image5_13" + position);
   doc.src = imageFiles_5_13[position][1];
}

function image_off_5_13 (position) {
   var doc = eval("document.image5_13" + position);
   doc.src = imageFiles_5_13[position][0];
}