if (document.images) {

  img_nav_staff_1on = new Image();
  img_nav_staff_1on.src = "../our_practice/_img/sbox_sherryover.jpg";
  img_nav_staff_2on = new Image();
  img_nav_staff_2on.src = "../our_practice/_img/sbox_barbaraover.jpg"; 
  img_nav_staff_3on = new Image();
  img_nav_staff_3on.src = "../our_practice/_img/sbox_janetover.jpg";
  img_nav_staff_4on = new Image();
  img_nav_staff_4on.src = "../our_practice/_img/sbox_sherylover.jpg";
  img_nav_staff_5on = new Image();
  img_nav_staff_5on.src = "../our_practice/_img/sbox_nancyover.jpg";
  img_nav_staff_6on = new Image();
  img_nav_staff_6on.src = "../our_practice/_img/sbox_darleneover.jpg";
  img_nav_staff_7on = new Image();
  img_nav_staff_7on.src = "../our_practice/_img/sbox_cheriover.jpg";
  img_nav_staff_8on = new Image();
  img_nav_staff_8on.src = "../our_practice/_img/sbox_laurieover.jpg";
  img_nav_staff_9on = new Image();
  img_nav_staff_9on.src = "../our_practice/_img/sbox_melaineover.jpg";
  img_nav_staff_10on = new Image();
  img_nav_staff_10on.src = "../our_practice/_img/sbox_donnaover.jpg";

  img_smileson = new Image();
  img_smileson.src = "../our_practice/_img/g_smiles_causeover.gif";

  img_nav_staff_1off = new Image();
  img_nav_staff_1off.src = "../our_practice/_img/sbox_sherry.jpg";
  img_nav_staff_2off = new Image();
  img_nav_staff_2off.src = "../our_practice/_img/sbox_barbara.jpg";
  img_nav_staff_3off = new Image();
  img_nav_staff_3off.src = "../our_practice/_img/sbox_janet.jpg";
  img_nav_staff_4off = new Image();
  img_nav_staff_4off.src = "../our_practice/_img/sbox_sheryl.jpg";
  img_nav_staff_5off = new Image();
  img_nav_staff_5off.src = "../our_practice/_img/sbox_nancy.jpg";
  img_nav_staff_6off = new Image();
  img_nav_staff_6off.src = "../our_practice/_img/sbox_darlene.jpg";
  img_nav_staff_7off = new Image();
  img_nav_staff_7off.src = "../our_practice/_img/sbox_cheri.jpg";
  img_nav_staff_8off = new Image();
  img_nav_staff_8off.src = "../our_practice/_img/sbox_laurie.jpg";
  img_nav_staff_9off = new Image();
  img_nav_staff_9off.src = "../our_practice/_img/sbox_melaine.jpg";
  img_nav_staff_10off = new Image();
  img_nav_staff_10off.src = "../our_practice/_img/sbox_donna.jpg";
  
  img_smilesoff = new Image();
  img_smilesoff.src = "../our_practice/_img/g_smiles_cause.gif";

}

function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
}