var imageFiles_h_28 = new Array();
imageFiles_h_28['0'] = new Array ('_images/h_About_Us.gif', '_images/h_About_UsMouseover.gif');

function image_on_h_28 (position) {
   var doc = eval("document.imageh_28" + position);
   doc.src = imageFiles_h_28[position][1];
}

function image_off_h_28 (position) {
   var doc = eval("document.imageh_28" + position);
   doc.src = imageFiles_h_28[position][0];
}