function BA_DisEnableFields (fieldsToEnable, fieldsToDisable) {
	var enArray = fieldsToEnable.split(',');
	var disArray = fieldsToDisable.split(',');
	for (i=0;i<enArray.length;i++)	
		document.getElementById(enArray[i]).disabled=false;
	for (j=0;j<disArray.length;j++)
		document.getElementById(disArray[j]).disabled=true;
}


/*function BA_ShowHideLayers (LayersToShow, LayersToHide) {
	var showArray = LayersToShow.split(',');
	var hideArray = LayersToHide.split(',');
	
	if (LayersToShow.length!=0) {
		for (i=0;i<showArray.length;i++)	
			document.getElementById(showArray[i]).style.visibility='visible';
		}
	if (LayersToHide.length!=0) {
		for (j=0;j<hideArray.length;j++)
			document.getElementById(hideArray[j]).style.visibility='hidden';
		}
    
}*/


function BA_DisableEnable() {
    if (document.getElementById('next').disabled==true){
        document.getElementById('next').disabled=false;
    }
   else {
    document.getElementById('next').disabled=true
    }
}

function Trial_DisableEnable() {
    if (document.getElementById('terms_agree').checked==true){
        document.getElementById('process').disabled=false;
    }
   else {
    document.getElementById('process').disabled=true;
    }
        
}


function MM_openBrWindow(theURL,winName,features) { //v2.0
      window.open(theURL,winName,features);
    }
    
function signup_validate(){
  
    if (document.signup.FirstName.value==""){
        alert("You must enter a First Name!")
        document.signup.FirstName.focus()
        return false
    }
    if (document.signup.LastName.value==""){
        alert("You must enter a Last Name!")
        document.signup.LastName.focus()
        return false
    }   
    if (document.signup.Email.value==""){
        alert("You must enter an Email Address!")
        document.signup.Email.focus()
        return false
    }
    
    if (document.signup.Email.value!=""){
        var str=document.signup.Email.value
		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Invalid E-mail Address")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail Address")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail Address")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail Address")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail Address")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail Address")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail Address")
		    return false
		 }
				
	}

    if (document.signup.WorkPhone.value==""){
        alert("You must enter a Phone Number!")
        document.signup.WorkPhone.focus()
        return false
    }
    if (document.signup.CompanyName.value==""){
        alert("You must enter a Company Name!")
        document.signup.CompanyName.focus()
        return false
    }
    if (document.signup.WorkAddress.value==""){
        alert("You must enter an Address!")
        document.signup.WorkAddress.focus()
        return false
    }
    if (document.signup.WorkCity.value==""){
        alert("You must enter a City/Town!")
        document.signup.WorkCity.focus()
        return false
    }
    if (document.signup.WorkCountryID.value==""){
        alert("You must choose a Country!")
        document.signup.WorkCountryID.focus()
        return false
    }
    if (document.signup.WorkPostalCode.value==""){
        alert("You must enter a postal code!")
        document.signup.WorkPostalCode.focus()
        return false
    }
}
    
    
function button_disable(){
    document.getElementById('process').disabled=true;
    document.getElementById('step3PrevBtn').disabled=true;
    document.Step_2.submit();
}


// billing_validate only here for testing

function billing_validate(){
  
    if (document.submit_billing.CardTypeID.value==""){
        alert("You must choose a Card type!")
        document.submit_billing.CardTypeID.focus()
        return false
    } 
    if (document.submit_billing.CardName.value==""){
        alert("You must enter the Name on Card!")
        document.submit_billing.CardName.focus()
        return false
    }   
    if (document.submit_billing.CardNumber.value==""){
        alert("You must enter a Card Number!")
        document.submit_billing.CardNumber.focus()
        return false
    }
    document.getElementById('process').disabled=true;
    document.submit_billing.submit();
}


function testCreditCard () {
  if (checkCreditCard (document.getElementById('Card_Number').value,document.getElementById('Card_Type_ID').value)) {
    //alert ("Credit card has a valid format")
    
    if (document.submit_billing.Card_Name.value==""){
        alert("You must enter the Name on Card!")
        document.submit_billing.Card_Name.focus()
        return false
    }   
    
    document.getElementById('process').disabled=true;
    document.submit_billing.submit();
  } 
  else {alert (ccErrors[ccErrorNo])};
}

var ccErrorNo = 0;
var ccErrors = new Array ()

ccErrors [0] = "No card type selected";
ccErrors [1] = "No card number provided";
ccErrors [2] = "Credit card number is in invalid format";
ccErrors [3] = "Credit card number is invalid";
ccErrors [4] = "Credit card number has an inappropriate number of digits";

function checkCreditCard (cardnumber, cardname) {
  // Array to hold the permitted card characteristics
  var cards = new Array();

  // Define the cards we support. You may add addtional card types.
  
  //  Name:      As in the selection box of the form - must be same as user's
  //  Length:    List of possible valid lengths of the card number for the card
  //  prefixes:  List of possible prefixes for the card
  //  checkdigit Boolean to say whether there is a check digit
  
  cards [0] = {name: "1", // Visa
               length: "13,16", 
               prefixes: "4",
               checkdigit: true};
  cards [1] = {name: "2", //MasterCard
               length: "16", 
               prefixes: "51,52,53,54,55",
               checkdigit: true};
  cards [2] = {name: "DinersClub", //DinersClub
               length: "14,", 
               prefixes: "300,301,302,303,304,305,36,38",
               checkdigit: true};
  cards [3] = {name: "CarteBlanche",  //CarteBlanche
               length: "14", 
               prefixes: "300,301,302,303,304,305,36,38",
               checkdigit: true};
  cards [4] = {name: "3", //AmEx
               length: "15", 
               prefixes: "34,37",
               checkdigit: true};
  cards [5] = {name: "Discover",  //Discover
               length: "16", 
               prefixes: "6011",
               checkdigit: true};
  cards [6] = {name: "JCB",  //JCB
               length: "15,16", 
               prefixes: "3,1800,2131",
               checkdigit: true};
  cards [7] = {name: "Enroute",  //Enroute
               length: "15", 
               prefixes: "2014,2149",
               checkdigit: true};
               
  // Establish card type
  var cardType = -1;
  for (var i=0; i<cards.length; i++) {

    // See if it is this card (ignoring the case of the string)
    if (cardname.toLowerCase () == cards[i].name.toLowerCase()) {
      cardType = i;
      break;
    }
  }
  
  // If card type not found, report an error
  if (cardType == -1) {
     ccErrorNo = 0;
     return false; 
  }
   
  // Ensure that the user has provided a credit card number
  if (cardnumber.length == 0)  {
     ccErrorNo = 1;
     return false; 
  }
  
  // Check that the number is numeric, although we do permit a space to occur  
  // every four digits. 
  var cardNo = cardnumber
  var cardexp = /^([0-9]{4})\s?([0-9]{4})\s?([0-9]{4})\s?([0-9]{1,4})$/;
  if (!cardexp.exec(cardNo))  {
     ccErrorNo = 2;
     return false; 
  }
    
  // Now remove any spaces from the credit card number
  cardexp.exec(cardNo);
  cardNo = RegExp.$1 + RegExp.$2 + RegExp.$3 + RegExp.$4;
       
  // Now check the modulus 10 check digit - if required
  if (cards[cardType].checkdigit) {
    var checksum = 0;                                  // running checksum total
    var mychar = "";                                   // next char to process
    var j = 1;                                         // takes value of 1 or 2
  
    // Process each digit one by one starting at the right
    var calc;
    for (i = cardNo.length - 1; i >= 0; i--) {
    
      // Extract the next digit and multiply by 1 or 2 on alternative digits.
      calc = Number(cardNo.charAt(i)) * j;
    
      // If the result is in two digits add 1 to the checksum total
      if (calc > 9) {
        checksum = checksum + 1;
        calc = calc - 10;
      }
    
      // Add the units element to the checksum total
      checksum = checksum + calc;
    
      // Switch the value of j
      if (j ==1) {j = 2} else {j = 1};
    } 
  
    // All done - if checksum is divisible by 10, it is a valid modulus 10.
    // If not, report an error.
    if (checksum % 10 != 0)  {
     ccErrorNo = 3;
     return false; 
    }
  }  

  // The following are the card-specific checks we undertake.
  var LengthValid = false;
  var PrefixValid = false; 
  var undefined; 

  // We use these for holding the valid lengths and prefixes of a card type
  var prefix = new Array ();
  var lengths = new Array ();
    
  // Load an array with the valid prefixes for this card
  prefix = cards[cardType].prefixes.split(",");
      
  // Now see if any of them match what we have in the card number
  for (i=0; i<prefix.length; i++) {
    var exp = new RegExp ("^" + prefix[i]);
    if (exp.test (cardNo)) PrefixValid = true;
  }
      
  // If it isn't a valid prefix there's no point at looking at the length
  if (!PrefixValid) {
     ccErrorNo = 3;
     return false; 
  }
    
  // See if the length is valid for this card
  lengths = cards[cardType].length.split(",");
  for (j=0; j<lengths.length; j++) {
    if (cardNo.length == lengths[j]) LengthValid = true;
  }
  
  // See if all is OK by seeing if the length was valid. We only check the 
  // length if all else was hunky dory.
  if (!LengthValid) {
     ccErrorNo = 4;
     return false; 
  };   
  
  // The credit card is in the required format.
  return true;
}