function validpwd(str)
{
		invalidChars = " "
		if (str == "") 
		{
			return (false);
		}
		for (i=0; i<invalidChars.length; i++) 
		{
			badChar = invalidChars.charAt(i)
			if (str.indexOf(badChar,0) != -1) 
			{
				return (false);
			}
		}
		return(true);
}
/*
function validEmailAddress(email)
{
		invalidChars = " /:,;~"
		if (email == "") 
		{
			return (false);
		}
		for (i=0; i<invalidChars.length; i++) 
		{
			badChar = invalidChars.charAt(i)
			if (email.indexOf(badChar,0) != -1) 
			{
				return (false);
			}
		}
		atPos = email.indexOf("@",1)
		if (atPos == -1) 
		{
			return (false);
		}
		if (email.indexOf("@",atPos+1) != -1) 
		{
			return (false);
		}
		periodPos = email.indexOf(".",atPos)
		if (periodPos == -1) 
		{
			return (false);
		}
		if (periodPos+3 > email.length)	
		{
			return (false);
		}
			
		return (true);
}
*/

function emailCheck (emailStr) 
{

	var checkTLD=1;

	var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;

	var emailPat=/^(.+)@(.+)$/;
	
	var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
	
	var validChars="\[^\\s" + specialChars + "\]";

	var quotedUser="(\"[^\"]*\")";

	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;

	var atom=validChars + '+';

	var word="(" + atom + "|" + quotedUser + ")";

	var userPat=new RegExp("^" + word + "(\\." + word + ")*$");

	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");

	var matchArray=emailStr.match(emailPat);

	if (matchArray==null) 
	{
		alert("Please enter a valid e-mail address.");
		return false;
	}
	var user=matchArray[1];
	var domain=matchArray[2];

	for (i=0; i<user.length; i++) 
	{
		if (user.charCodeAt(i)>127) 
		{
			alert("Ths username contains invalid characters.");
			return false;
		}
	}
	for (i=0; i<domain.length; i++) 
	{
		if (domain.charCodeAt(i)>127) 
		{
			alert("Ths domain name contains invalid characters.");
			return false;
		}
	}

	if (user.match(userPat)==null) 
	{
		alert("The username doesn't seem to be valid.");
		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) 
	{
		for (var i=1;i<=4;i++) 
		{
			if (IPArray[i]>255) 
			{
				alert("Destination IP address is invalid!");
				return false;
			}
		}
	}
	var atomPat=new RegExp("^" + atom + "$");
	var domArr=domain.split(".");
	var len=domArr.length;
	for (i=0;i<len;i++) 
	{
		if (domArr[i].search(atomPat)==-1) 
		{
			alert("The domain name does not seem to be valid.");
			return false;
   		}
	}
	
	if (checkTLD && domArr[domArr.length-1].length!=2 && domArr[domArr.length-1].search(knownDomsPat)==-1)
	{
		alert("The address must end in a well-known domain or two letter " + "country.");
		return false;
	}
	if (len<2)
	{
		alert("This address is missing a hostname!");
		return false;
	}
	return true;
}

function checkFields()
{
if(document.forumfrm.firstname.value=="")
{
	alert("Please enter first name.");
	document.forumfrm.firstname.focus();
	return false;
}

if(document.forumfrm.lastname.value=="")
{
	alert("Please enter last name.");
	document.forumfrm.lastname.focus();
	return false;
}

if(document.forumfrm.address.value=="")
{
	alert("Please enter address.");
	document.forumfrm.address.focus();
	return false;
}

if(document.forumfrm.city.value=="")
{
	alert("Please enter city.");
	document.forumfrm.city.focus();
	return false;
}

if(document.forumfrm.country.value=="")
{
	alert("Please select country.");
	document.forumfrm.country.focus();
	return false;
}

if(document.forumfrm.postcode.value=="")
{
	alert("Please enter postcode.");
	document.forumfrm.postcode.focus();
	return false;
}

if(document.forumfrm.ph_countrycode.value=="")
{
	alert("Please enter country code.");
	document.forumfrm.ph_countrycode.focus();
	return false;
}

if(document.forumfrm.ph_area_code.value=="")
{
	alert("Please enter area code.");
	document.forumfrm.ph_area_code.focus();
	return false;
}

if(document.forumfrm.phone.value=="")
{
	alert("Please enter telephone.");
	document.forumfrm.phone.focus();
	return false;
}

if(document.forumfrm.email.value=="")
{
alert("Please enter e-mail.")
document.forumfrm.email.focus();
return false;
}

if(!emailCheck(document.forumfrm.email.value))
{
document.forumfrm.email.focus();
return false;
}

if(document.forumfrm.username.value=="")
{
alert("Please enter username.")
document.forumfrm.username.focus();
return false;
}

if(document.forumfrm.password.value=="")
{
alert("Please enter password.");
document.forumfrm.password.focus();
return false;
}

var pass_value=document.forumfrm.password.value;
var password_length=pass_value.length;

if(password_length<5 || password_length>12)
{
alert("Please enter 5-12 characters in password field.");
document.forumfrm.password.focus();
return false;
}

if((document.forumfrm.password.value)!=(document.forumfrm.repassword.value))
{
	alert("You did not enter the same password. Please re-enter your password.");
	document.forumfrm.repassword.focus();
	return false;
}
//
if(document.forumfrm.question.value=="")
{
alert("Please select question.")
document.forumfrm.question.focus();
return false;
}

if(document.forumfrm.answer.value=="")
{
alert("Please enter answer.")
document.forumfrm.answer.focus();
return false;
}

if(document.forumfrm.security_code.value=="")
{
alert("Please enter word verification.")
document.forumfrm.security_code.focus();
return false;
}

return true;
}

function checkFields_edit()
{
if(document.forumfrm.firstname.value=="")
{
	alert("Please enter first name.");
	document.forumfrm.firstname.focus();
	return false;
}

if(document.forumfrm.lastname.value=="")
{
	alert("Please enter last name.");
	document.forumfrm.lastname.focus();
	return false;
}

if(document.forumfrm.address.value=="")
{
	alert("Please enter address.");
	document.forumfrm.address.focus();
	return false;
}

if(document.forumfrm.city.value=="")
{
	alert("Please enter city.");
	document.forumfrm.city.focus();
	return false;
}

if(document.forumfrm.country.value=="")
{
	alert("Please select country.");
	document.forumfrm.country.focus();
	return false;
}

if(document.forumfrm.postcode.value=="")
{
	alert("Please enter postcode.");
	document.forumfrm.postcode.focus();
	return false;
}

if(document.forumfrm.ph_countrycode.value=="")
{
	alert("Please enter country code.");
	document.forumfrm.ph_countrycode.focus();
	return false;
}

if(document.forumfrm.ph_area_code.value=="")
{
	alert("Please enter area code.");
	document.forumfrm.ph_area_code.focus();
	return false;
}

if(document.forumfrm.phone.value=="")
{
	alert("Please enter telephone.");
	document.forumfrm.phone.focus();
	return false;
}

if(document.forumfrm.email.value=="")
{
alert("Please enter e-mail.")
document.forumfrm.email.focus();
return false;
}

if(!emailCheck(document.forumfrm.email.value))
{
document.forumfrm.email.focus();
return false;
}

if(document.forumfrm.username.value=="")
{
alert("Please enter username.")
document.forumfrm.username.focus();
return false;
}

if(document.forumfrm.password.value=="")
{
alert("Please enter password.");
document.forumfrm.password.focus();
return false;
}

var pass_value=document.forumfrm.password.value;
var password_length=pass_value.length;

if(password_length<5 || password_length>12)
{
alert("Please enter 5-12 characters in password field.");
document.forumfrm.password.focus();
return false;
}

if((document.forumfrm.password.value)!=(document.forumfrm.repassword.value))
{
	alert("You did not enter the same password. Please re-enter your password.");
	document.forumfrm.repassword.focus();
	return false;
}

return true;
}

function loginvalid()
{
	if(document.loginfrm.username.value=="")
	{
	alert("Please enter username.")
	document.loginfrm.username.focus();
	return false;
	}
	
	if(document.loginfrm.password.value=="")
	{
	alert("Please enter password.");
	document.loginfrm.password.focus();
	return false;
	}
}