function checkemail () {

var email = document.regform.email.value;
var last  = email.length - 1;

if ( last == -1 ) { alert('Please enter your email address.'); return false; }

if ( email.charAt(0) == '@' ) { alert('Your Email address is missing the first part.\ne.g. yourname@'); return false; }
if ( email.charAt(last) == '@' ) { alert('Your Email address is missing the last part.\ne.g. @yourserviceprovider.co.uk'); return false; }

var atcount = 0;
var dotcount = 0;

for ( var x=0; x <= last; x++ ) {

    if ( email.charAt(x) == '@' ) { atcount++; }
        else if ( email.charAt(x) == '.' ) { if ( atcount > 0 ) { dotcount++; } }
        }

if ( atcount == 0 || atcount > 1 ) { alert('Your Email address must contain one @ character.\ne.g. yourname@yourserviceprovider.co.uk'); return false; }
if ( dotcount == 0 ) { alert('Your Email address must contain at least one dot after the @ sign\ne.g. yourserviceprovider.co.uk'); return false; }
if ( last < 8 ) { alert('Your email appears to be too short to be valid - please check'); return false; }

return true;

} 

function checkform() {
if ( document.regform.first_name.value == '' )
	{
	alert('Please enter your first name');
	document.regform.first_name.focus();
	return false;
	}
else if ( document.regform.last_name.value == '' )
	{
	alert('Please enter your last name');
	document.regform.last_name.focus();
	return false;
	}

else if ( document.regform.password.value == '' )
	{
	alert('Please choose a password');
	document.regform.password.focus();
	return false;
	}
else if ( document.regform.password_again.value == '' )
	{
	alert('Please enter your password again to confirm');
	document.regform.password_again.focus();
	return false;
	}
else if ( document.regform.password.value != document.regform.password_again.value)
	{
	alert('The 2 passwords you entered are different');
	document.regform.password.focus();
	return false;
	}
else if ( document.regform.email.value == '' )
	{
	alert('Please enter your email address');
	document.regform.email.focus();
	return false;
	}
else if ( document.regform.email.value != document.regform.email_again.value)
	{
	alert('The 2 emails you entered are different');
	document.regform.email.focus();
	return false;
	}
else if (!document.regform.usertype_new[0].checked && !document.regform.usertype_new[1].checked && !document.regform.usertype_new[2].checked )
	{
	alert('Please select whether you have a room for rent in an existing share or if you are searching for a room');
	
	return false;
	}
else if (!document.regform.inagreement.checked )
	{
	alert("You must agree to our terms and privacy policy before proceeding - please tick the box under 'Your agreement with us'");
	
	return false;
	}
//else if ( !checkemail())
//	{
//	document.regform.email.focus();
//	return false;
//	}
else 
	{
	return confirm('You have entered your email as\n'+document.regform.email.value+'\nPlease double check this is correct as your access details will be emailed to this address\nIf you wish to change it, please press cancel');
	} 
}