var imageFiles_20_11 = new Array();
imageFiles_20_11['0'] = new Array ('_images/20_Contact_Us___Map.gif', '_images/20_Contact_Us___MapMouseover.gif');

function image_on_20_11 (position) {
   var doc = eval("document.image20_11" + position);
   doc.src = imageFiles_20_11[position][1];
}

function image_off_20_11 (position) {
   var doc = eval("document.image20_11" + position);
   doc.src = imageFiles_20_11[position][0];
}