var imageFiles_y_13 = new Array();
imageFiles_y_13['0'] = new Array ('_images/y_Office_Policy.gif', '_images/y_Office_PolicyMouseover.gif');
imageFiles_y_13['1'] = new Array ('_images/y_Other_Locations.gif', '_images/y_Other_LocationsMouseover.gif');

function image_on_y_13 (position) {
   var doc = eval("document.imagey_13" + position);
   doc.src = imageFiles_y_13[position][1];
}

function image_off_y_13 (position) {
   var doc = eval("document.imagey_13" + position);
   doc.src = imageFiles_y_13[position][0];
}