n1 = new Image();      n1.src = "/_img/buttons/lnav_1_lo.gif";
h1 = new Image();      h1.src = "/_img/buttons/lnav_1_hi.gif";
n2 = new Image();      n2.src = "/_img/buttons/lnav_2_lo.gif";
h2 = new Image();      h2.src = "/_img/buttons/lnav_2_hi.gif";
n3 = new Image();      n3.src = "/_img/buttons/lnav_3_lo.gif";
h3 = new Image();      h3.src = "/_img/buttons/lnav_3_hi.gif";
n4 = new Image();      n4.src = "/_img/buttons/lnav_4_lo.gif";
h4 = new Image();      h4.src = "/_img/buttons/lnav_4_hi.gif";
n5 = new Image();      n5.src = "/_img/buttons/lnav_5_lo.gif";
h5 = new Image();      h5.src = "/_img/buttons/lnav_5_hi.gif";
n6 = new Image();      n6.src = "/_img/buttons/lnav_6_lo.gif";
h6 = new Image();      h6.src = "/_img/buttons/lnav_6_hi.gif";
n7 = new Image();      n7.src = "/_img/buttons/lnav_7_lo.gif";
h7 = new Image();      h7.src = "/_img/buttons/lnav_7_hi.gif";


nkon = new Image();      nkon.src = "/_img/button_kontakt_lo.gif";
hkon = new Image();      hkon.src = "/_img/button_kontakt_hi.gif";



var Bildname,Bildobjekt;

function ImgSwap(Bildname,Bildobjekt)
{
   if (document.images)
   {
      var a = document[Bildname].name;
      document[a].src = Bildobjekt.src;
   }
}