var imageFiles_pb_4 = new Array();
imageFiles_pb_4['0'] = new Array ('_images/pb_PICTURES.gif', '_images/pb_PICTURESMouseover.gif');

function image_on_pb_4 (position) {
   var doc = eval("document.imagepb_4" + position);
   doc.src = imageFiles_pb_4[position][1];
}

function image_off_pb_4 (position) {
   var doc = eval("document.imagepb_4" + position);
   doc.src = imageFiles_pb_4[position][0];
}