var imageFiles_tn_21 = new Array();
imageFiles_tn_21['0'] = new Array ('_images/tn_PRESS_AND_MEDIA.gif', '_images/tn_PRESS_AND_MEDIAMouseover.gif');

function image_on_tn_21 (position) {
   var doc = eval("document.imagetn_21" + position);
   doc.src = imageFiles_tn_21[position][1];
}

function image_off_tn_21 (position) {
   var doc = eval("document.imagetn_21" + position);
   doc.src = imageFiles_tn_21[position][0];
}