// change the estimated shipping date and update the form

function updateShipPref(msg, form_val, ship_pref_display) {
	// update div
	d = document.getElementById('shipdate');
	d.innerHTML = msg;
	// update hidden form variables
	document.pnp.refsite.value = ship_pref_display;
	document.myform.ship_pref.value = form_val;
}