function sessionFormCheck(formName,formLayer){

	if (formLayer) { // Layers exist

		var dom = document.getElementById ? true:false;
		var nn4 = document.layers ? true:false;
		var ie4 = document.all ? true:false;
		
		if(ie4){
			alert("IE4");
			var formElements = document.forms[formName].length;
			var formToEvaluate = document.forms[formName];
		} 
		else {
			if(nn4){
				alert("NN4");
				var formElements = document.layers[formLayer].document.forms[formName].length;
				var formToEvaluate = document.layers[formLayer].document.forms[formName];
			}
			else {
				if(dom){
				alert("DOM");
				alert("Browser does not support form sheets");
				}
				else {
					//what happens here. this may not function
					alert("Unknown browser. May not function properly");
					var formElements = document.all.forms[formName].length;
					var formToEvaluate = document.all.forms[formName];
				}
       		}
		}
	}    
	else { // No Layers
		var formElements = document.forms[formName].length;
		var formToEvaluate = document.forms[formName];
	}
    
    var arraySize = 0;
    confirmFieldName = new Array();
    confirmFieldValue = new Array();
    var CardExpMonth = "";
	var CardExpYear = "";
	var CardNumber = "";
	
	var pass = true;
	for (i=0;i<formElements;i++) {
		var tempName = formToEvaluate.elements[i].name;
		var tempValue = formToEvaluate.elements[i].value;
		var tempType = formToEvaluate.elements[i].type;
		var tempSelectedIndex = formToEvaluate.elements[i].selectedIndex;
		
		if(tempType == 'select-one'){
			tempValue = formToEvaluate.elements[i].options[tempSelectedIndex].value;
		}
		 
		// alert(tempSelectedIndex.options[1]);
		 
		//	alert(tempName+","+tempValue+","+tempType+","+tempSelectedIndex);
		
		if ((tempName.substring(0,8)=="required")||(tempName.substring(0,8)=="IsEmail_")) {
			alertFieldName = tempName.substring(8);
			
			if(alertFieldName=='Sitename'){
				alertFieldName = 'Val av tj'+unescape("%E4")+'nst';
			}			 

			if(alertFieldName=='Username'){
				alertFieldName = 'Anv'+unescape("%E4")+'ndarnamn';
			}

			if(alertFieldName=='Password'){
				alertFieldName = 'L'+unescape("%F6")+'senord';
			}
			
			if(alertFieldName=='CardExpMonth'){
				var CardExpMonth = tempValue;
			}
			
			if(alertFieldName=='CardExpYear'){
				var CardExpYear = tempValue;
			}
			
			if(alertFieldName=='CardNumber'){
				var CardNumber = tempValue;
			}
			
			// alert(alertFieldName+" = "+tempValue);
			
			confirmName = (alertFieldName.substring(0,7)=="Confirm") ? alertFieldName.substring(7) : alertFieldName;
			if (((tempType=="text" || tempType=="password" || tempType=="textarea") && tempValue=='') || (tempType.toString().charAt(0)=="s" && tempSelectedIndex==0)) { 
				pass=false;
				break;
			} else {
				if(tempName.substring(0,8)=="IsEmail_") {
					if(emailCheck(tempValue)) {
					} else {
						return false;
						break;
					}
				}
       		}

		arraySize = confirmFieldName.length;	// collect in confirm array here
		confirmFieldName[arraySize] = confirmName;
		confirmFieldValue[arraySize] = tempValue;

		
		}	
	}	
	
	if (!pass) { // Display result and act
		alert(alertFieldName+" ej korrekt ifyllt!");
		return false;
	}
	else {
			
		arraySize = confirmFieldName.length;
		for (i=0;i<arraySize;i++) { // perform confirm check here
			var refName = confirmFieldName[i];
			for (n=0;n<arraySize-i;n++) {
				if(refName == confirmFieldName[n]) {
					if(confirmFieldValue[i] != confirmFieldValue[n]) { // we have a mismatch
						alert("Values in "+refName+" does not match!");
						return false;
					}
				}
			}
		}
		
		if((CardExpMonth != '') && (CardExpYear != '') && (CardNumber != '')) {
			var passRTN = false;
			// check the format of credit card number
			//	alert(CardNumber+" "+CardExpYear+" "+CardExpMonth)
			errorstr=CheckCard(CardNumber,CardExpYear,CardExpMonth);
			if (errorstr!="") {
			     switch(errorstr)
				{	case "DATEXP" : alert("Your card has expiredÉ"); error=true; break;
					case "BADNUM" : alert("This number is not validÉ"); error=true; break;
					case "UNKCAR" : alert("This card's type is not validÉ"); error=true; break;
					case "INVLEN" : alert("Key's length of this card is not validÉ"); error=true; break;
					case "INVKEY" : alert("Key of this card is not validÉ"); error=true; break;
					default : alert("Your card is a "+errorstr);
				} 
			} else {	
			passRTN = true;	//	alert("Card OK");
			}
		return passRTN; 
		}
		
		//	alert("Everything seems OK but nothing will happen!");	
		return true; 
	}
	alert("Internal error");	
	return false; 
}


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("Epostadress felaktig (kontrollera @ och .)")
	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("Epostadress ogiltig!")
    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("Epost IP adress ogiltig!")
		return false
	    }
    }
    return true
}

// Domain is symbolic name
var domainArray=domain.match(domainPat)
if (domainArray==null) {
	alert("Email domain is not valid!")
    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>8) {
   // the address must end in a two letter or three letter word. Now support .family
   alert("Email address must end in at least a two letter word")
   return false
}

// Make sure there's a host name preceding the domain.
if (len<2) {
   var errStr="Email domain missing!"
   alert(errStr)
   return false
}

// If we've gotten this far, everything's valid!
return true;
}

function postSubmit(formName,actionURL) {
  document.forms[formName].action=actionURL;
  document.forms[formName].submit();
}


function sessionSubmitByFormCheck (formName,actionURL) {
  if (sessionFormCheck(formName)) {
    document.forms[formName].action=actionURL;
    document.forms[formName].submit();
  }
}