var imageFiles_f8_21 = new Array();
imageFiles_f8_21['0'] = new Array ('_images/f8_Home.gif', '_images/f8_HomeMouseover.gif');
imageFiles_f8_21['1'] = new Array ('_images/f8_Our_Services.gif', '_images/f8_Our_ServicesMouseover.gif');
imageFiles_f8_21['2'] = new Array ('_images/f8_Why_Use_Us_.gif', '_images/f8_Why_Use_Us_Mouseover.gif');
imageFiles_f8_21['3'] = new Array ('_images/f8_Articles.gif', '_images/f8_ArticlesMouseover.gif');
imageFiles_f8_21['4'] = new Array ('_images/f8_Contact_Us.gif', '_images/f8_Contact_UsMouseover.gif');

function image_on_f8_21 (position) {
   var doc = eval("document.imagef8_21" + position);
   doc.src = imageFiles_f8_21[position][1];
}

function image_off_f8_21 (position) {
   var doc = eval("document.imagef8_21" + position);
   doc.src = imageFiles_f8_21[position][0];
}