var imageFiles_tn_31 = new Array();
imageFiles_tn_31['0'] = new Array ('_images/tn_PRESS_AND_MEDIA.gif', '_images/tn_PRESS_AND_MEDIAMouseover.gif');

function image_on_tn_31 (position) {
   var doc = eval("document.imagetn_31" + position);
   doc.src = imageFiles_tn_31[position][1];
}

function image_off_tn_31 (position) {
   var doc = eval("document.imagetn_31" + position);
   doc.src = imageFiles_tn_31[position][0];
}