var imageFiles_20_1 = new Array();
imageFiles_20_1['0'] = new Array ('_images/20_Contact_Us___Map.gif', '_images/20_Contact_Us___MapMouseover.gif');

function image_on_20_1 (position) {
   var doc = eval("document.image20_1" + position);
   doc.src = imageFiles_20_1[position][1];
}

function image_off_20_1 (position) {
   var doc = eval("document.image20_1" + position);
   doc.src = imageFiles_20_1[position][0];
}