function checkEntry_katalog(){
				if(!document.getElementById('fornavn').value){
						alert('Du glemte at skrive fornavn ...');
						document.getElementById('fornavn').focus();
						return true;
				} else if(!document.getElementById('efternavn').value){
						alert('Du glemte at skrive efternavn ...');
						document.getElementById('efternavn').focus();
						return true;
				} else if(!document.getElementById('adresse1').value){
						alert('Du glemte at skrive din adresse ...');
						document.getElementById('adresse1').focus();
						return true;
				} else if(!document.getElementById('postnr').value){
						alert('Du glemte at skrive postnummer ...');
						document.getElementById('postnr').focus();
						return true;
				} else if(!document.getElementById('bynavn').value){
						alert('Du glemte at skrive hvilken by du bor i ...');
						document.getElementById('bynavn').focus();
						return true;
				} else if(document.getElementById('check').checked && (!document.getElementById('mobil').value)){
						alert('Du glemte at skrive dit mobilnummer ...');
						document.getElementById('mobil').focus();
						return true;
						
				}  else if(document.getElementById('check').checked && (!document.getElementById('email').value)){
						alert('Du glemte at skrive din email ...');
						document.getElementById('email').focus();
						return true;
						
				}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_changeProp(objName,x,theProp,theValue) { //v6.0
  var obj = MM_findObj(objName);
  if (obj && (theProp.indexOf("style.")==-1 || obj.style)){
    if (theValue == true || theValue == false)
      eval("obj."+theProp+"="+theValue);
    else eval("obj."+theProp+"='"+theValue+"'");
  }
}

//Følgende sjuler felterne der skal bruges hvis gæsten ønsker at tilmelde sig Uptours Nyhedsbrev på katalogsiden
function visibility(){
	if(document.getElementById('check').checked){
		MM_changeProp('skjul','','style.display','block','DIV')
	} else {
		MM_changeProp('skjul','','style.display','none','DIV')
    }
}
function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}