function tilbake(){window.history.go(-1);}

function y4(x){return(x<500)?x+1900:x;}function tS(){x=new Date();x.setTime(x.getTime());return x;}
function lZ(x){return (x>9)?x:'0'+x;}
function dTime(){if(dfr==0){
dfr=1;
document.write('<span id="dtP">'+eval(doT)+'<\/span>');}

document.getElementById("dtP").innerHTML=eval(doT);
/*dtP.innerHTML=eval(doT);*/
setTimeout('dTime()',1000);}
var dfr=0,doT="lZ(tS().getHours())+':'+lZ(tS().getMinutes())+':'+lZ(tS().getSeconds())+' '";
function dT(){if(fr==0){fr=1; document.write('<span id="tP">'+eval(oT)+'<\/span>');}
document.getElementById("tP").innerHTML=eval(oT);
setTimeout('dT()',1000);}
var fr=0,oT="lZ(tS().getDate())+'/'+lZ((tS().getMonth()+1))+'-'+y4(tS().getYear())";
/*to Start/display your clock use:<script language="JavaScript">dT();</script>eller <script language="JavaScript">dTime();</script>*/

/* Meny start */
var opera = (navigator.userAgent.toLowerCase().indexOf("opera") != -1);
var minId = 0;
var mnrId = 0;
var mImg = new Image();mImg.src = "/system/minus18x14b.gif";
var pImg = new Image();pImg.src = "/system/pluss18x14b.gif";

function menyStart(id) {
	if (!document.getElementById("mexpand" + id)) return;
	document.getElementById("mexpand" + id).style.position = 'relative';
	opera = true;
	mclick(id);
	minId = 0;
}
function mclick(id) {
	minId = id;
	var imgId = document.getElementById("img" + id);
	var mexpandId = document.getElementById("mexpand" + id);
	var imgMId = document.getElementById("img" + mnrId);
	var mexpandMId = document.getElementById("mexpand" + mnrId);

	if (mexpandId.style.display == 'block') {
		mexpandMId.style.display = 'none';
		imgId.src = pImg.src;
		mnrId = 0;
	}
	else {
		if (mnrId != 0) {
			mexpandMId.style.display = 'none';// if (!opera) mexpandMId.style.position = 'absolute';
			imgMId.src = pImg.src;
		}
		mexpandId.style.display = 'block';
		imgId.src = mImg.src;
		mnrId = id;
	}
	return false;
}
/* Meny slutt */

function emailCheck (emailStr) {
/* The following pattern is used to check if the entered e-mail address
   fits the user@domain format.  It also is used to separate the username
   from the domain. */
var emailPat=/^(.+)@(.+)$/
/* The following string represents the pattern for matching all special
   characters.  We don't want to allow special characters in the address.
   These characters include ( ) < > @ , ; : \ " . [ ]    */
var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
/* The following string represents the range of characters allowed in a
   username or domainname.  It really states which chars aren't allowed. */
var validChars="\[^\\s" + specialChars + "\]"
/* The following pattern applies if the "user" is a quoted string (in
   which case, there are no rules about which characters are allowed
   and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
   is a legal e-mail address. */
var quotedUser="(\"[^\"]*\")"
/* The following pattern applies for domains that are IP addresses,
   rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
   e-mail address. NOTE: The square brackets are required. */
var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
/* The following string represents an atom (basically a series of
   non-special characters.) */
var atom=validChars + '+'
/* The following string represents one word in the typical username.
   For example, in john.doe@somewhere.com, john and doe are words.
   Basically, a word is either an atom or quoted string. */
var word="(" + atom + "|" + quotedUser + ")"
// The following pattern describes the structure of the user
var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
/* The following pattern describes the structure of a normal symbolic
   domain, as opposed to ipDomainPat, shown above. */
var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")

/* Finally, let's start trying to figure out if the supplied address is  valid. */

/* Begin with the coarse pattern to simply break up user@domain into different pieces that are easy to analyze. */
var matchArray=emailStr.match(emailPat)
if (matchArray==null) { /* Too many/few @'s or something; basically, this address doesn't even fit the general mould of a valid e-mail address. */
	alert("Epost-adressen er ugyldig (sjekk @ og .)")
	return false
}
var user=matchArray[1]
var domain=matchArray[2]

/* See if "user" is valid */
if (user.match(userPat)==null) {/* user is not valid */
    alert("Brukernavnet ser ikke bra ut.")
	return false
}

/* if the e-mail address is at an IP address (as opposed to a symbolic host name) make sure the IP address is valid. */
var IPArray=domain.match(ipDomainPat)
if (IPArray!=null) {
    /* this is an IP address */
	  for (var i=1;i<=4;i++) {
	    if (IPArray[i]>255) {
	        alert("IP-adressen er ugyldig!")
		return false
	    }
    }
    return true
}
// Domain is symbolic name
var domainArray=domain.match(domainPat)
if (domainArray==null) {
	alert("Domenenavnet er ugyldig.")
    return false
}
/* domain name seems valid, but now make sure that it ends in a
   three-letter word (like com, edu, gov) or a two-letter word,
   representing country (uk, nl), and that there's a hostname preceding
   the domain or country.

   Now we need to break up the domain to get a count of how many atoms
   it consists of. */
var atomPat=new RegExp(atom,"g")
var domArr=domain.match(atomPat)
var len=domArr.length
if (domArr[domArr.length-1].length<2 ||
    domArr[domArr.length-1].length>4) {
   /* the address must end in a two letter or three letter word. UTVIDET TIL 4. */
   alert("Adressen må ende på et noe slikt som .no, .com, .org eller lignende.")
   return false
}
/* Make sure there's a host name preceding the domain. */
if (len<2) {
   var errStr="Adressen savner et vertsnavn!\n... sol.no, hotmail.com eller noe tilsvarende."
   alert(errStr)
   return false
}/* If we've gotten this far, everything's valid! */
return true;
}/* emailCheck slutt */