var imageFiles_3j_13 = new Array();
imageFiles_3j_13['0'] = new Array ('_images/3j_SURVEYING.gif', '_images/3j_SURVEYINGMouseover.gif');

function image_on_3j_13 (position) {
   var doc = eval("document.image3j_13" + position);
   doc.src = imageFiles_3j_13[position][1];
}

function image_off_3j_13 (position) {
   var doc = eval("document.image3j_13" + position);
   doc.src = imageFiles_3j_13[position][0];
}