var imageFiles_c_13 = new Array();
imageFiles_c_13['0'] = new Array ('_images/c_HOME.gif', '_images/c_HOMEMouseover.gif');
imageFiles_c_13['1'] = new Array ('_images/c_ABOUT_US.gif', '_images/c_ABOUT_USMouseover.gif');
imageFiles_c_13['2'] = new Array ('_images/c_SERVICES.gif', '_images/c_SERVICESMouseover.gif');
imageFiles_c_13['3'] = new Array ('_images/c_CONTACT.gif', '_images/c_CONTACTMouseover.gif');

function image_on_c_13 (position) {
   var doc = eval("document.imagec_13" + position);
   doc.src = imageFiles_c_13[position][1];
}

function image_off_c_13 (position) {
   var doc = eval("document.imagec_13" + position);
   doc.src = imageFiles_c_13[position][0];
}