function doPreload(){
    var the_images = new Array(	"images/meny_hoved_over.gif", 
															"images/meny_kontakt_over.gif", 
															"images/meny_andre_over.gif", 
															"images/meny_andre.gif",
															"images/meny_valg.gif",
															"images/meny_valg_over.gif",
															"images/meny_hvorfor_over.gif",
															"images/menu_sert_over.gif");
    for (i=0; i<the_images.length; i++){
      var tmp = new Image();
      tmp.src = the_images[i];
    }
 }

 function vis(image_name, fil){
    document.images[image_name].src = "images/" + fil;
 }
function vis_sert(){
  document.images['sert'].src = "images/meny_sert_over.gif";
	document.images['hvorfor'].src = "images/meny_valg.gif";
	document.images['hvorfor'].width = 208;
	document.images['hvorfor'].height = 21;
	// document.getElementById('td_hvorfor').align = 'left';
 }
function skjul_sert(){
	document.images['sert'].src = "images/meny_sert.gif";
	document.images['hvorfor'].src = "images/spacer.gif";
	document.images['hvorfor'].width = 1;
	document.images['hvorfor'].height = 10;
 }

function vis_kontakt(){
  document.images['kontakt'].src = "images/meny_kontakt_over.gif";
	document.images['tilbud'].src = "images/meny_tilbud.gif";
	document.images['tilbud'].width = 113;
	document.images['tilbud'].height = 21;
 }
function skjul_kontakt(){
	document.images['kontakt'].src = "images/meny_kontakt.gif";
	document.images['tilbud'].src = "images/spacer.gif";
	document.images['tilbud'].width = 1;
	document.images['tilbud'].height = 10;
 }