var lingMinUserNameChars = 5;
var lingMinPasswordChars = 5;

function EmptyField(aFields) {
var bRet = false;
var i = 0;
	
	for (i=0;i<=aFields.length;i++) {
		if (aFields[i]=='') {
			bRet = true;
			break;
		}
	}
	return(bRet);
}
function ValidEmail(strEmail)
{
	// Check if the email address is valid 
	var strAt = strEmail.indexOf('@')
	var strDot = strEmail.lastIndexOf('.') 
	var intLength = strEmail.length - 1 
	if ((strAt < 1) || (strDot <= strAt+1) || (strDot == intLength ))
	{ 
		return(false);
	} 
	else
	{
		return(true);
	}
}

function ValidUserName(strUsername) {
	if (strUsername.length < lingMinUserNameChars) {
		return(false);
	}else{
		return(true);
	}
}

function ValidPassword(strPassword) {
	if (strPassword.length < lingMinPasswordChars) {
		return(false);
	}else{
		return(true);
	}
}