<!-- Begin
function checkUsername(uName){

if (uName.search(" ") != -1)
{
	alert("Email Address cannot contain any spaces.  Please re-enter.");
	document.login.login_username.value = ""
	document.login.login_username.focus();
	return false;
}

if (uName.search("@natblast") != -1)
{
	alert("Your email address should end with @natisp.com . Please re-enter.");
	document.login.login_username.value = ""
	document.login.login_username.focus();
	return false;
}

if (uName.search("@") == -1 && uName != "")
{

document.login.login_username.value = uName + '@natisp.com';

}

return false;
}
// End -->