function checkValid (f) {
	
	if (f.boardname.value == "") {
		alert('Enter a boardname')
		return false;
	}
	if (f.boardname.value.length < 4) {
		alert('Four characters minimum for boardname')
		return false;
	}
	if (f.password.value.length < 4) {
		alert('Your password requires at least 4 characters')
		return false;
	}
	if (f.password2.value.length < 4) {
		alert('Your duplicate password requires the same character count')
		return false;
	}
	if (f.password.value != f.password2.value) {
		alert('You must enter your password correctly both times')
		return false;
	}
	if (f.email.value == "") {
		alert('Enter an email')
		return false;
	}

	// For email validation only
	
	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=f.email.value.match(emailPat)
	if (matchArray==null) {
	alert("Email address seems incorrect (check @ and .'s)")
	return false
	}
	var user=matchArray[1]
	var domain=matchArray[2]
	if (user.match(userPat)==null) {
	 alert("The email username doesn't seem to be valid.")
	   return false
	}
	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
	    }
	   }
	   return true
	}
	var domainArray=domain.match(domainPat)
	if (domainArray==null) {
	alert("The domain name doesn't seem to be valid.")
	   return false
	}
	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>3) {
	  alert("The address must end in a three-letter domain, or two letter country.")
	  return false
	}
	if (len<2) {
	  var errStr="This address is missing a hostname!"
	  alert(errStr)
	  return false
	}
	return true; <!-- end email parsing -->
	
	// end email parsing
}