var imageFiles_h_52 = new Array();
imageFiles_h_52['0'] = new Array ('_images/h_About_Us.gif', '_images/h_About_UsMouseover.gif');

function image_on_h_52 (position) {
   var doc = eval("document.imageh_52" + position);
   doc.src = imageFiles_h_52[position][1];
}

function image_off_h_52 (position) {
   var doc = eval("document.imageh_52" + position);
   doc.src = imageFiles_h_52[position][0];
}