// Funksjon for å gjøre et objekt usynlig vha ID-attributt
	function hideObject(someID) {
		document.getElementById(someID).style.visibility = 'hidden';
	}
	
	// Funksjon for å gjøre et objekt synlig vha ID-attributt
	function showObject(someID) {
		document.getElementById(someID).style.visibility = 'visible';
	}

	function MM_showHideLayers() { //v6.0
		  var i,p,v,obj,args=MM_showHideLayers.arguments;
		  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
			if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
			obj.visibility=v; }
		}
	
	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_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_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_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];}
	}
	
	function MM_validateForm() { //v4.0
	  var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
	  for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=MM_findObj(args[i]);
		if (val) { nm=val.name; if ((val=val.value)!="") {
		  if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
			if (p<1 || p==(val.length-1)) errors+='- '+nm+' må inneholde en epostadresse, eller stå tomt.\n';
		  } else if (test!='R') { num = parseFloat(val);
			if (isNaN(val)) errors+='- '+nm+' må inneholde et nummer.\n';
			if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
			  min=test.substring(8,p); max=test.substring(p+1);
			  if (num<min || max<num) errors+='- '+nm+' må inneholde et tall mellom '+min+' og '+max+'.\n';
		} } } else if (test.charAt(0) == 'R') errors += '- '+nm+' må fylles ut.\n'; }
	  } if (errors) alert('Følgende hindrer informasjonen fra å bli registrert:\n'+errors);
	  document.MM_returnValue = (errors == '');
	}
	
function toogleDisplay(obj) {
	var el = document.getElementById(obj);
	if ( el.style.display != 'none' ) {
		el.style.display = 'none';
	}
		else {
		el.style.display = '';
	}
}

function displayHideLayers() { 
	  var i,p,v,obj,args=displayHideLayers.arguments;
	  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
		if (obj.style) { obj=obj.style; v=(v=='show')?'':(v=='hide')?'none':v; }
		obj.display=v; }
	}
	
function textCounter(field, countfield, maxlimit) {
	var objTextarea, objCounter
	objTextarea = document.getElementById(field)
	objCounter = document.getElementById(countfield)
	// Teller antall felt i et textarea og trimmer teksten ved for lang tekst.
	if (objTextarea.value.length > maxlimit) // if too long...trim it!
		objTextarea.value = objTextarea.value.substring(0, maxlimit);
	else // otherwise, update 'characters left' counter
		objCounter.value = maxlimit - objTextarea.value.length;
}

function validateFilename( listOfIDs, prefiks, lang ){
	var invalidstr = ' æåøÆÅØ/:\'\\'; // Invalid character is a space
	var antallUlovligeTegn = 0, flag_InneholderFeil = false;
	var array_IDs = listOfIDs.split(',');

	for (teller = 0; teller < array_IDs.length; teller++) {
		var filename = extract(document.getElementById(prefiks + array_IDs[teller]).value);
		antallUlovligeTegn = 0;
		
		for (t = 0; t < invalidstr.length; t++ ) {
			if (filename.indexOf(invalidstr.charAt(t)) != -1) {
				antallUlovligeTegn++;
				flag_InneholderFeil = true;
			}
		}
	
		if (antallUlovligeTegn > 0) {
			if (lang == 'no') {
				alert('Beklager, filnavnet "' + filename + '" inneholder ulovlige tegn. Gi den et nytt navn og unngå bruk av disse tegnene: \n"' + invalidstr + '". Ikke bruk mellomrom.');	}
			if (lang == 'en') {
				alert('Sorry, the file "' + filename + '" contains illegal characters. Please rename and don\'t use any of these characters: \n"' + invalidstr + '". Do not use spaces.');	}
		}
	}
	
	if (flag_InneholderFeil == true ) {
		return false; }
	else {
		return true;
	}
}

function extract(what)
{
	if (what.indexOf('/') != -1)
		answer = what.substring(what.lastIndexOf('/')+1,what.length);
	else
		answer = what.substring(what.lastIndexOf('\\')+1,what.length);
	return answer;
}