var ciffer = /^\d*$/;
	function tvingCifre(feltObj){

		if (ciffer.test(feltObj.value)) {
			// alt er ok
		} else {
			var til = "";
			var fra = feltObj.value;
			for (var i=0; fra.length>i; i++ )
				if ( ciffer.test( fra.charAt(i) ) )
					til += fra.charAt(i);
			feltObj.value = til;
		}
	}

	function validateEmail(email){
		if (email.length == 0){
			return false;
		}
		found = false;
		for (i=0; i < email.length; i=i+1) {
			if (email.charAt(i) == "@") {
				var num = i;
				found = true;
			}
		} //slut for
		if (found == false) {
		  return false;
		} else {
			//fundet på plads num.
			num++;
			komma1found = false;
			for (num; num < email.length; num++){
				if(email.charAt(num) == "."){
					komma1found = true;
					var num2 = num;
				}
			}
			if (komma1found == false){
				return false;
			} else {
				//tester for tegn efter komma.
				var t = email.length -3;
				if (num2 > t){
					return false;
				}
			}
		}
		return true;
	}//end function


	function validateNyhedsbrev(){
		var f = document.forms.formNewsletter;

		if (f.email.value == "Indtast e-mail..." || f.email.value == ""){
			alert("Indtast venligst e-mail");
			return false;
		}

		if (! validateEmail(f.email.value)){
			alert("Den indtastede e-mail er ikke korrekt. \nPrøv venligst igen.");
			f.email.focus();
			return false;
		}

		return true;
	}

	function nlEnter(){
		if (document.forms.formNewsletter.email.value == "Indtast e-mail her..."){
			document.forms.formNewsletter.email.value = "";
		}
	}


	function nlExit(){

		if (document.forms.formNewsletter.email.value == ""){
			document.forms.formNewsletter.email.value = "Indtast e-mail her...";
		}


	}

	function randomNum(nr) {
		return parseInt((Math.random() * nr) + 1);
	}

	function setOpacity(obj, opacity) {
	  opacity = (opacity == 100)?99.999:opacity;
	   // IE/Win
	  obj.style.filter = "alpha(opacity:"+opacity+")";
	   // Safari<1.2, Konqueror
	  obj.style.KHTMLOpacity = opacity/100;
	   // Older Mozilla and Firefox
	  obj.style.MozOpacity = opacity/100;
	   // Safari 1.2, newer Firefox and Mozilla, CSS3
	  obj.style.opacity = opacity/100;
	}

	function tilmeldNl(){
		if (validateNyhedsbrev()){
			document.forms.formNewsletter.submit();
		}
	}

	function showHideOverkat(id){
		if (id != 0){
			var s = "blockOverKat"+id;
			var bl = document.getElementById(s);
			if (bl.style.display == "block"){
				bl.style.display = "none";
			} else {
				bl.style.display = "block"
			}
		}

		for (var j = 0;j <= overkatIdArr.length -1; j++){
			if (overkatIdArr[j] != id){
				var s = "blockOverKat"+overkatIdArr[j];
				document.getElementById(s).style.display = "none";
			}
		}
	}
	function setOpacity(obj, opacity) {
	  opacity = (opacity == 100)?99.999:opacity;
	   // IE/Win
	  obj.style.filter = "alpha(opacity:"+opacity+")";
	   // Safari<1.2, Konqueror
	  obj.style.KHTMLOpacity = opacity/100;
	   // Older Mozilla and Firefox
	  obj.style.MozOpacity = opacity/100;
	   // Safari 1.2, newer Firefox and Mozilla, CSS3
	  obj.style.opacity = opacity/100;
	}

	function fadeOut(objId,opacity) {
	  if (document.getElementById) {
		obj = document.getElementById(objId);
		if (opacity >= 10) {
		  setOpacity(obj, opacity);
		  opacity -= 10;
		  window.setTimeout("fadeOut('"+objId+"',"+opacity+")", 50);
		}
	  }
	}

	function fadeOutAndRedir(objId,opacity,url) {
	  if (document.getElementById) {
		obj = document.getElementById(objId);
		if (opacity >= 5) {
		  setOpacity(obj, opacity);
		  opacity -= 5;
		  window.setTimeout("fadeOutAndRedir('"+objId+"',"+opacity+",'"+url+"')", 100);
		} else {
			setOpacity(obj, 0);
			document.location.href = url;
		}
	  }
	}

	function fadeIn(objId,opacity) {
	  if (document.getElementById) {
		obj = document.getElementById(objId);
		if (obj != null){
			if (opacity <= 100) {

			  setOpacity(obj, opacity);
			  opacity += 10;
			  window.setTimeout("fadeIn('"+objId+"',"+opacity+")", 100);
			}
		}
	  }
	}