var imageFiles_16_1 = new Array();
imageFiles_16_1['0'] = new Array ('_images/16_School_Field_Trips.gif', '_images/16_School_Field_TripsMouseover.gif');
imageFiles_16_1['1'] = new Array ('_images/16_Family_Tours.gif', '_images/16_Family_ToursMouseover.gif');

function image_on_16_1 (position) {
   var doc = eval("document.image16_1" + position);
   doc.src = imageFiles_16_1[position][1];
}

function image_off_16_1 (position) {
   var doc = eval("document.image16_1" + position);
   doc.src = imageFiles_16_1[position][0];
}