var imageFiles_21_55 = new Array();
imageFiles_21_55['0'] = new Array ('_images/21_Rental_Properties.gif', '_images/21_Rental_PropertiesMouseover.gif');
imageFiles_21_55['1'] = new Array ('_images/21_Photo_Gallery.gif', '_images/21_Photo_GalleryMouseover.gif');
imageFiles_21_55['2'] = new Array ('_images/21_Strength_Items.gif', '_images/21_Strength_ItemsMouseover.gif');

function image_on_21_55 (position) {
   var doc = eval("document.image21_55" + position);
   doc.src = imageFiles_21_55[position][1];
}

function image_off_21_55 (position) {
   var doc = eval("document.image21_55" + position);
   doc.src = imageFiles_21_55[position][0];
}