function enable1(name) {
	var email = document.emailForm.email.value;
	enableJoinControls(name,email);
}

function enable2(email) {
	var name = document.emailForm.name.value;
	enableJoinControls(name,email);
}

function enableJoinControls(name, email) {

	if ( name.length>0
	     && email.length>0
	     ) {
		document.emailForm.send.disabled=false;
	} else {
		document.emailForm.send.disabled=true;
	}
}