var ie45,ns6,ns4,dom; 
if (navigator.appName=="Microsoft Internet Explorer") 
  ie45=parseInt(navigator.appVersion)>=4; 
else if (navigator.appName=="Netscape"){ 
  ns6=parseInt(navigator.appVersion)>=5; 
  ns4=parseInt(navigator.appVersion)<5;} 
dom=ie45 || ns6; 

function showhide(id) { 
el = document.all ? document.all[id] : 
  dom ? document.getElementById(id) : 
  document.layers[id]; 
els = dom ? el.style : el; 
if (dom){ 
  if (els.visibility == "hidden") 
    els.visibility = "visible"; 
  else els.visibility = "hidden"; 
  } 
else if (ns4){ 
  if (els.visibility == "show") 
    els.visibility = "hide"; 
  else els.visibility = "show"; 
  }
}


function visskjul(id) {
el = document.all ? document.all[id] : 
  dom ? document.getElementById(id) : 
  document.layers[id]; 
els = dom ? el.style : el; 
if (dom){ 
  if (els.display == "none") 
    els.display = "block"; 
  else els.display = "none"; 
  } 
else if (ns4){ 
  if (els.display == "block") 
    els.display = "none"; 
  else els.display = "block"; 
  }
}


function visskjul1(id) {
el = document.all ? document.all[id] : 
  dom ? document.getElementById(id) : 
  document.layers[id]; 
els = dom ? el.style : el; 
if (dom){ 
  if (els.display == "none") 
    els.display = "inline"; 
  else els.display = "none"; 
  } 
else if (ns4){ 
  if (els.display == "inline") 
    els.display = "none"; 
  else els.display = "inline"; 
  }
}


function visbesked(id) {
	document.getElementById('sb1').style.display="none";
	document.getElementById('sb2').style.display="none";
	document.getElementById('sb3').style.display="none";
	document.getElementById('sb4').style.display="none";
	document.getElementById('sb5').style.display="none";
	document.getElementById(id).style.display="block";
}


function skiftbesked(a) {
	visbesked('sb'+a);
	a++;
	if(a==6) { a=1; }
	setTimeout("skiftbesked("+a+")",7000);
}


function alttekst(id) { 
el = document.all ? document.all[id] : 
  dom ? document.getElementById(id) : 
  document.layers[id]; 
els = dom ? el.style : el; 
if (dom){ 
  if (els.visibility == "hidden") 
    els.visibility = "visible"; 
  else els.visibility = "hidden"; 
  } 
else if (ns4){ 
  if (els.visibility == "show") 
    els.visibility = "hide"; 
  else els.visibility = "show"; 
  }
}