// Function used to turn on and off optinal areas on contact us page.

function changeOptMsg(form){
    document.getElementById("hotelNameOrCity").style.display = "none";
    document.getElementById("ConfNumber").style.display = "none";
    document.getElementById("memberNumber").style.display = "none";
    
    if(form.value.indexOf('Hotel Information') != -1 || form.value.indexOf('Hotel Rates and Availability') != -1 || form.value.indexOf('Your Feedback to') != -1){
		document.getElementById("hotelNameOrCity").style.display = "block";
	}

    if(form.value.indexOf('Reservation') != -1){
		document.getElementById("ConfNumber").style.display = "block";
	}

    if(form.value.indexOf('Starwood Preferred Guest') != -1){
		document.getElementById("memberNumber").style.display = "block";
	}
}