var imageFiles_pd_13 = new Array();
imageFiles_pd_13['0'] = new Array ('_images/pd_GLASS.gif', '_images/pd_GLASSMouseover.gif');

function image_on_pd_13 (position) {
   var doc = eval("document.imagepd_13" + position);
   doc.src = imageFiles_pd_13[position][1];
}

function image_off_pd_13 (position) {
   var doc = eval("document.imagepd_13" + position);
   doc.src = imageFiles_pd_13[position][0];
}