function CheckSignInForm()
{
  if(trim(document.frmSignIn.txtUsername.value)=="") {
    alert("Please enter your username to sign in")
    document.frmSignIn.txtUsername.focus();
    return false;
  } else if(trim(document.frmSignIn.txtPassword.value)=="") {
    alert("Please enter your password to sign in")
    document.frmSignIn.txtPassword.focus();
    return false;
  } else
    return true;
}

function CheckContactForm()
{
  if(trim(document.frmContact.txtFirstName.value)=="") {
    alert("Please enter your first name");
    document.frmContact.txtFirstName.focus();
    return false;
  } else if(trim(document.frmContact.txtSurname.value)=="") {
    alert("Please enter your surname");
    document.frmContact.txtSurname.focus();
    return false;
  } else if(trim(document.frmContact.txtEMail.value)=="") {
    alert("Please enter your email address");
    document.frmContact.txtEMail.focus();
    return false;
  } else if(trim(document.frmContact.txtComments.value)=="") {
    alert("Please enter your comments");
    document.frmContact.txtComments.focus();
    return false;
  } else
    return true;
}

function CheckSignInMainForm()
{
  if(trim(document.frmSignInMain.txtUsername.value)=="") {
    alert("Please enter your username to sign in")
    document.frmSignInMain.txtUsername.focus();
    return false;
  } else if(trim(document.frmSignInMain.txtPassword.value)=="") {
    alert("Please enter your password to sign in")
    document.frmSignInMain.txtPassword.focus();
    return false;
  } else
    return true;
}

function CheckRegisterForm()
{
	
  if(trim(document.frmRegister.txtRegisterFirstName.value)=="") {
    alert("Please enter your first name");
    document.frmRegister.txtRegisterFirstName.focus();
    return false;
  } else if(trim(document.frmRegister.txtRegisterSurname.value)=="") {
    alert("Please enter your surname");
    document.frmRegister.txtRegisterSurname.focus();
    return false;
  } else if(trim(document.frmRegister.txtRegisterUsername.value)=="") {
    alert("Please enter your desired username");
    document.frmRegister.txtRegisterUsername.focus();
    return false;
  } else if(trim(document.frmRegister.txtRegisterPassword.value)=="") {
    alert("Please enter your password");
    document.frmRegister.txtRegisterPassword.focus();
    return false;
  } else if(trim(document.frmRegister.txtRegisterPassword.value.toLowerCase()) =="magicwand") {
    alert("Sorry, 'MagicWand' is an invalid password");
    document.frmRegister.txtRegisterPassword.focus();
    return false;
  } else if(document.frmRegister.txtRegisterPassword.value.length < 6) {
    alert("You Password Must Be At Least Six Characters Long");
    document.frmRegister.txtRegisterPassword.focus();
    return false;
  } else if(document.frmRegister.txtRegisterPassword.value!=document.frmRegister.txtRegisterPasswordConfirm.value) {
    alert("Your passwords do not match.Please check and re-enter them");
    document.frmRegister.txtRegisterPassword.focus();
    return false;
  } else if(!IsValidEmailAddress(document.frmRegister.txtRegisterEMail.value)) {
    alert("Please enter a valid email address");
    document.frmRegister.txtRegisterEMail.focus();
    return false;
  } else if (trim(document.getElementById("txtRegisterDOBD").value) == "" || trim(document.getElementById("txtRegisterDOBM").value) == "" || trim(document.getElementById("txtRegisterDOBY").value) == "") {
	alert("You must fill in your age");
	document.frmRegister.txtRegisterDOBD.focus();
    return false;
  } else if (!CheckDate(document.getElementById("txtRegisterDOBD").options[document.getElementById("txtRegisterDOBD").selectedIndex].value + document.getElementById("txtRegisterDOBM").options[document.getElementById("txtRegisterDOBM").selectedIndex].value + document.getElementById("txtRegisterDOBY").options[document.getElementById("txtRegisterDOBY").selectedIndex].value)) {
	alert("You birthday is not valid, must be in form DD/MM/YYYY");
	document.frmRegister.txtRegisterDOBD.focus();
	return false;
  } else if (!radio_button_checker()) {
	  alert("You must say if you are a boy or a girl.");
	  return false;
  } else if (!IsAdult()){ 
	if (IsValidObject(document.frmRegister.hdGuardianFieldActive)){
		if (!IsValidEmailAddress(document.getElementById("txtGuardianEMail").value)) {
			alert("You must enter a guardians e-mail address if you are under 13");
			document.frmRegister.txtGuardianEMail.focus();
			return false;
		}
	} else {
		document.getElementById("divGuardianInputSec").innerHTML = "<input type=\"text\" name=\"txtGuardianEMail\" class=\"RegisterField\" /><span class=\"RequiredFieldStar\" >&nbsp;*</span><input type=\"hidden\" name=\"hdGuardianFieldActive\" value=\"true\"><br /><p class=\"RegisterText\"> It looks like your under 13. Please ask a Parent or Guardian to supply there email address, so we can send them confirmation of your membership. </p>";
		document.getElementById("divGuardianTitleSec").innerHTML = "<p class=\"RegisterText\">Guardians E-mail :</p>"
		alert("You must enter a guardians e-mail address if you are under 13");
		document.frmRegister.txtGuardianEMail.focus();
		return false;	
	}
  }  else {
    return true;
  }

}


function CheckUpdateDetailsForm()
{
	
  if(trim(document.frmRegister.txtRegisterFirstName.value)=="") {
    alert("Please enter your first name");
    document.frmRegister.txtRegisterFirstName.focus();
    return false;
  } else if(trim(document.frmRegister.txtRegisterSurname.value)=="") {
    alert("Please enter your surname");
    document.frmRegister.txtRegisterSurname.focus();
    return false;
  } else if(trim(document.frmRegister.txtRegisterUsername.value)=="") {
    alert("Please enter your desired username");
    document.frmRegister.txtRegisterUsername.focus();
    return false;
  } else if(trim(document.frmRegister.txtRegisterPassword.value)=="") {
    alert("Please enter your password");
    document.frmRegister.txtRegisterPassword.focus();
    return false;
  } else if(trim(document.frmRegister.txtRegisterPassword.value.toLowerCase()) =="magicwand") {
    alert("Sorry, 'MagicWand' is an invalid password");
    document.frmRegister.txtRegisterPassword.focus();
    return false;
  } else if(document.frmRegister.txtRegisterPassword.value.length < 6) {
    alert("You Password Must Be At Least Six Characters Long");
    document.frmRegister.txtRegisterPassword.focus();
    return false;
  } else if(document.frmRegister.txtRegisterPassword.value!=document.frmRegister.txtRegisterPasswordConfirm.value) {
    alert("Your passwords do not match.Please check and re-enter them");
    document.frmRegister.txtRegisterPassword.focus();
    return false;
  } else if(!IsValidEmailAddress(document.frmRegister.txtRegisterEMail.value)) {
    alert("Please enter a valid email address");
    document.frmRegister.txtRegisterEMail.focus();
    return false;
  } else if (trim(document.getElementById("txtRegisterDOBD").value) == "" || trim(document.getElementById("txtRegisterDOBM").value) == "" || trim(document.getElementById("txtRegisterDOBY").value) == "") {
	alert("You must fill in your age");
	document.frmRegister.txtRegisterDOBD.focus();
    return false;
  } else if (!CheckDate(document.getElementById("txtRegisterDOBD").options[document.getElementById("txtRegisterDOBD").selectedIndex].value + document.getElementById("txtRegisterDOBM").options[document.getElementById("txtRegisterDOBM").selectedIndex].value + document.getElementById("txtRegisterDOBY").options[document.getElementById("txtRegisterDOBY").selectedIndex].value)) {
	alert("You birthday is not valid, must be in form DD/MM/YYYY");
	document.frmRegister.txtRegisterDOBD.focus();
	return false;
  } else if (!radio_button_checker()) {
	  alert("You must say if you are a boy or a girl.");
	  return false;
  }  else {
    return true;
  }

}

function CheckUpdateDetailsForm()
{
  if(trim(document.frmRegister.txtRegisterFirstName.value)=="") {
    alert("Please enter your first name");
    document.frmRegister.txtRegisterFirstName.focus();
    return false;
  } else if(trim(document.frmRegister.txtRegisterSurname.value)=="") {
    alert("Please enter your surname");
    document.frmRegister.txtRegisterSurname.focus();
    return false;
  } else if(trim(document.frmRegister.txtRegisterPassword.value)=="") {
    alert("Please enter your password");
    document.frmRegister.txtRegisterPassword.focus();
    return false;
  } else if(trim(document.frmRegister.txtRegisterPassword.value)!=trim(document.frmRegister.txtRegisterPasswordConfirm.value)) {
    alert("Your passwords do not match.Please check and re-enter them");
    document.frmRegister.txtRegisterPassword.focus();
    return false;
  } else if(trim(document.frmRegister.txtRegisterEMail.value)=="") {
    alert("Please enter your email address");
    document.frmRegister.txtRegisterEMail.focus();
    return false;
  } else
    return true;
}

function CheckEMailFriendForm()
{
  if(trim(document.frmEMailFriend.txtName.value)=="") {
    alert("Please enter your friend's name");
    document.frmEMailFriend.txtName.focus();
    return false;
  } else if(trim(document.frmEMailFriend.txtEMail.value)=="") {
    alert("Please enter your friend's email address");
    document.frmEMailFriend.txtEMail.focus();
    return false;
  } else if(trim(document.frmEMailFriend.txtNameFrom.value)=="") {
    alert("Please enter your name");
    document.frmEMailFriend.txtNameFrom.focus();
    return false;
  } else if(trim(document.frmEMailFriend.txtEMailFrom.value)=="") {
    alert("Please enter your email address");
    document.frmEMailFriend.txtEMailFrom.focus();
    return false;
  } else
    return true;
}

function SubmitEMailFriendForm()
{
  if(CheckEMailFriendForm())
    document.frmEMailFriend.submit();
}

function CheckTradeRegisterForm()
{
  if(document.frmTradeRegister.txtFirstName.value=="") {
    alert("Please enter your first name");
    document.frmTradeRegister.txtFirstName.focus();
    return false;
  } else if(document.frmTradeRegister.txtSurname.value=="") {
    alert("Please enter your surname");
    document.frmTradeRegister.txtSurname.focus();
    return false;
  } else if(document.frmTradeRegister.txtJobTitle.value=="") {
    alert("Please enter your job title");
    document.frmTradeRegister.txtJobTitle.focus();
    return false;
  } else if(document.frmTradeRegister.txtCompanyName.value=="") {
    alert("Please enter the company's name");
    document.frmTradeRegister.txtCompanyName.focus();
    return false;
  } else if(document.frmTradeRegister.txtEMail.value=="") {
    alert("Please enter your email address");
    document.frmTradeRegister.txtEMail.focus();
    return false;
  } else if(document.frmTradeRegister.txtWebAddress.value=="" || document.frmTradeRegister.txtWebAddress.value=="http://") {
    alert("Please enter your company's web address");
    document.frmTradeRegister.txtWebAddress.focus();
    return false;
  } else
    return true;
}

function CheckSignInTradeForm()
{
  if(document.frmSignInTrade.txtTradeUsername.value=="") {
    alert("Please enter your username to sign in")
    document.frmSignInTrade.txtTradeUsername.focus();
    return false;
  } else if(document.frmSignInTrade.txtTradePassword.value=="") {
    alert("Please enter your password to sign in")
    document.frmSignInTrade.txtTradePassword.focus();
    return false;
  } else
    return true;
}

function CheckCheckoutForm()
{
  if(trim(document.frmCheckout.txtBillName.value)=="") 
  {
    alert("Please enter your name");
    document.frmCheckout.txtBillName.focus();
    return false;
  } 

  if(trim(document.frmCheckout.txtBillTelephone.value)=="") 
  {
    alert("Please enter your telephone number");
    document.frmCheckout.txtBillTelephone.focus();
    return false;
  } 

  if(!IsValidEmailAddress(document.frmCheckout.txtBillEMail.value)) 
  {
    alert("Please enter a valid email address");
    document.frmCheckout.txtBillEMail.focus();
    return false;
  } 

  if(trim(document.frmCheckout.txtBillAddress1.value)=="") 
  {
    alert("Please enter your billing address 1");
    document.frmCheckout.txtBillAddress1.focus();
    return false;
  } 

  if(trim(document.frmCheckout.txtBillCity.value)=="") 
  {
    alert("Please enter your billing city");
    document.frmCheckout.txtBillCity.focus();
    return false;
  } 

  if(trim(document.frmCheckout.txtBillPostcode.value)=="") 
  {
    alert("Please enter your billing postcode");
    document.frmCheckout.txtBillPostcode.focus();
    return false;
  } 

  if(document.getElementById("lbCountry").options[document.getElementById("lbCountry").selectedIndex].value == -1)
  {
	alert("You must select your country");
	return false;
  } 

  if((document.getElementById("lbCountry").options[document.getElementById("lbCountry").selectedIndex].value != "UNITED KINGDOM") && (document.frmCheckout.cbShippingAddress.checked == false)) 
  {
    document.frmCheckout.action="http://www.marvinsmagic.com/Default.asp?Page=CheckOut&Area=CantDeliverAbroad";
	return true;
  }

  if (document.frmCheckout.cbShippingAddress.checked == false) 
  {
	document.frmCheckout.action = "http://www.marvinsmagic.com/Checkout/Submit.asp";
	return true;
  } 

  return true;

}

function CheckCheckoutShippingForm()
{
  if(trim(document.frmCheckout.txtShippingName.value)=="") {
    alert("Please enter your shipping name");
    document.frmCheckout.txtShippingName.focus();
    return false;
  } else if(trim(document.frmCheckout.txtShipAddress1.value)=="") {
    alert("Please enter your shipping address 1");
    document.frmCheckout.txtShipAddress1.focus();
    return false;
  } else if(trim(document.frmCheckout.txtShipCity.value)=="") {
    alert("Please enter your shipping city");
    document.frmCheckout.txtShipCity.focus();
    return false;
  } else if(trim(document.frmCheckout.txtShipPostcode.value)=="") {
    alert("Please enter your shipping postcode");
    document.frmCheckout.txtShipPostcode.focus();
    return false;
  } else if(document.getElementById("lbCountry").options[document.getElementById("lbCountry").selectedIndex].value != "UNITED KINGDOM") {
    document.frmCheckout.action="http://www.marvinsmagic.com/Default.asp?Page=CheckOut&Area=CantDeliverAbroad";
	document.frmCheckout.submit()
    return false; 
  }  else {
    return true;
  }
}



function CheckThreadForm()
{
  if(document.frmThread.txtThreadTitle.value=="") {
    alert("Please enter the new topic's name");
    document.frmThread.txtThreadTitle.focus();
    return false;
  } else if(document.frmThread.txtThreadText.value=="") {
    alert("Please enter the a short description of the new topic");
    document.frmThread.txtThreadText.focus();
    return false;
  } else if(document.frmThread.txtThreadText.value.length>500) {
    alert("The description you have entered is too long. It is "+document.frmThread.txtThreadText.value.length+" characters long, but must not be more tha 500 characters");
    document.frmThread.txtThreadText.focus();
    return false;
  } else
    return true;
}

function CheckPostForm()
{
  if(document.frmPost.txtPostText.value=="") {
    alert("Please enter your post");
    return false;
  } else
  {
    return true;
  }
}

function CheckSearchForm()
{
  if(document.frmSearch.txtSearch.value=="") {
    alert("Please enter your search phrase");
    document.frmSearch.txtSearch.focus();
    return false;
  } else
    return true;
    
}

function SubmitSearchResults(nIndex)
{
  document.frmResults.txtIndex.value=nIndex;
  document.frmResults.submit();

}

function CheckCompetitionForm()
{
  var nIndex;

  for(nIndex=0; nIndex<document.frmCompetition.radAnswer.length; nIndex++) {
      if(document.frmCompetition.radAnswer[nIndex].checked)
        return true;
  }

  alert("Please choose your answer");

  return false;
}

function CheckVoteForm()
{
  var nIndex;

  for(nIndex=0; nIndex<document.frmVote.radVote.length; nIndex++) {
      if(document.frmVote.radVote[nIndex].checked)
        return true;
  }

  alert("Please choose your what you wish to vote for");

  return false;
}

function CheckCodeForm()
{
  if(document.frmCode.txtCode.value=="") {
    alert("Please enter your code");
    document.frmCode.txtCode.focus();
    return false;
  } else
    return true;
}

function CheckRetailCodeForm()
{
  if(document.frmRetail.txtCode.value=="") {
    alert("Please enter your secret code");
    document.frmRetail.txtCode.focus();
    return false;
  } else
    return true;
}

function IsAdult()
{
	var nYear
	var nMonth
	var nDay
	now = new Date
	nYear = now.getYear();
    nMonth = now.getMonth() +1;
	nDay = now.getDate();

	var nBYear
	var nBMonth
	var nBDay
	nBYear = document.getElementById("txtRegisterDOBY").value;
	nBMonth = document.getElementById("txtRegisterDOBM").value;
	nBDay = document.getElementById("txtRegisterDOBD").value;

	if ((nYear - nBYear) > 13)
	{
		return true; // Old Enough
	} 
	
	if ((nYear - nBYear) == 13) {
		
		if ((nBMonth - nMonth) > 0)
		{
			return false;
		} 
		else if ((nBMonth - nMonth) == 0)
		{
			if ((nBDay - nDay) > 0)
			{
				return false;
			} else 
			{
				return true; // Old Enough
			}
		}
	} else {
		return false;
	}
}

function CheckDate(strDate){
var checkstr = "0123456789";
var Datevalue = "";
var DateTemp = "";
var seperator = ".";
var day;
var month;
var year;
var leap = 0;
var err = 0;
var i;

   err = 0;

   DateValue = strDate;
   

   /* Delete all chars except 0..9 */
   for (i = 0; i < DateValue.length; i++) {
	  if (checkstr.indexOf(DateValue.substr(i,1)) >= 0) {
	     DateTemp = DateTemp + DateValue.substr(i,1);
	  }
   }
   DateValue = DateTemp;
   
    if (DateValue == "")
   {
		err = 29;
   }
   /* Always change date to 8 digits - string*/
   /* if year is entered as 2-digit / always assume 20xx */
   if (DateValue.length == 6) {
      DateValue = DateValue.substr(0,4) + '20' + DateValue.substr(4,2); }
   if (DateValue.length != 8) {
      err = 19;}
   /* year is wrong if year = 0000 */
   year = DateValue.substr(4,4);
   if (year == 0) {
      err = 20;
   }
   
   /* Validation of month*/
   month = DateValue.substr(2,2);
   if ((month < 1) || (month > 12)) {
      err = 21;
   }
   /* Validation of day*/
   day = DateValue.substr(0,2);
   if (day < 1) {
     err = 22;
   }
   /* Validation leap-year / february / day */
   if ((year % 4 == 0) || (year % 100 == 0) || (year % 400 == 0)) {
      leap = 1;
   }
   if ((month == 2) && (leap == 1) && (day > 29)) {
      err = 23;
   }
   if ((month == 2) && (leap != 1) && (day > 28)) {
      err = 24;
   }
   /* Validation of other months */
   if ((day > 31) && ((month == "01") || (month == "03") || (month == "05") || (month == "07") || (month == "08") || (month == "10") || (month == "12"))) {
      err = 25;
   }
   if ((day > 30) && ((month == "04") || (month == "06") || (month == "09") || (month == "11"))) {
      err = 26;
   }
	
	/* WHAT THE HELL IS THIS BIT FOR - means no error if letters entered */
   /* if 00 ist entered, no error, deleting the entry 
   if ((day == 0) && (month == 0) && (year == 00)) {
      err = 0; day = ""; month = ""; year = ""; seperator = "";
   }*/

   if (err == 0) {
	  return true;
   }
   else {
	  return false;

   }
}


function radio_button_checker()
{
	var radio_choice = false;

	for (counter = 0; counter < document.frmRegister.rblGender.length; counter++)
	{
		if (document.frmRegister.rblGender[counter].checked)
			radio_choice = true; 
	}
	if (!radio_choice)
	{
		return false;
	}
	return true;
}

function IsValidEmailAddress(strInput) {
    
	if (strInput == "")
	{
		return false;
	}

	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (filter.test(strInput)) {
			return true;  
		} else { 
			return false; 
		}			
}

function trim(str)
{
   return str.replace(/^\s*|\s*$/g,"");
}

function IsValidObject(objToTest) {

		if (null == objToTest) {
			return false;
		}

		if ("undefined" == typeof(objToTest) ) {
			return false;
		}
		return true;

}


function clearDefault(el) {
  if (el.defaultValue==el.value) el.value = ""
}