var imageFiles_3p_4 = new Array();
imageFiles_3p_4['0'] = new Array ('_images/3p_Ad_Specialties.gif', '_images/3p_Ad_SpecialtiesMouseover.gif');

function image_on_3p_4 (position) {
   var doc = eval("document.image3p_4" + position);
   doc.src = imageFiles_3p_4[position][1];
}

function image_off_3p_4 (position) {
   var doc = eval("document.image3p_4" + position);
   doc.src = imageFiles_3p_4[position][0];
}