if (document.images) {
  properties_roll = new Image(85,30); properties_roll.src="images/main_properties_btn_roll.gif";
  locations_roll = new Image(72,30); locations_roll.src="images/main_location_btn_roll.gif";
  rates_roll = new Image(49,30); rates_roll.src="images/main_rates_btn_roll.gif";
  travelinfo_roll = new Image(86,30); travelinfo_roll.src="images/main_travelinfo_btn_roll.gif";
  whatshappening_roll = new Image(128,30); whatshappening_roll.src="images/main_whatshappening_btn_roll.gif";

  mplogo_roll = new Image(245,108); mplogo_roll.src="images/main_mplogo_roll.gif";
  owners_link_roll = new Image(135,39); owners_link_roll.src="images/main_owners_link_roll.gif";
  book_online_roll = new Image(96,78); book_online_roll.src="images/book_online_btn_roll.gif";
  push_talk_roll = new Image(95,78); push_talk_roll.src="images/push_to_talk_btn_roll.gif";

  properties_off = new Image(85,30); properties_off.src="images/main_properties_btn.gif";
  locations_off = new Image(72,30); locations_off.src="images/main_location_btn.gif";
  rates_off = new Image(49,30); rates_off.src="images/main_rates_btn.gif";
  travelinfo_off = new Image(86,30); travelinfo_off.src="images/main_travelinfo_btn.gif";
  whatshappening_off = new Image(128,30); whatshappening_off.src="images/main_whatshappening_btn.gif";

  mplogo_off = new Image(245,108); mplogo_off.src="images/main_mplogo.gif";
  owners_link_off = new Image(135,39); owners_link_off.src="images/main_owners_link.gif";
  book_online_off = new Image(96,78); book_online_off.src="images/book_online_btn.gif";
  push_talk_off = new Image(95,78); push_talk_off.src="images/push_to_talk_btn.gif";

  function imgOver(imgTxt, state) {
    if (state == 'on') {
      document[imgTxt].src = eval(imgTxt + "_roll.src");
    }
    else {
      document[imgTxt].src = eval(imgTxt + "_off.src");
    }
  }
}

  function turnOnProperties() {
	document.all.propertiesDiv.style.visibility = "visible";
	document.all.locationsDiv.style.visibility = "hidden";
 	document.all.travelInfoDiv.style.visibility = "hidden";
	document.all.ratesDiv.style.visibility = "hidden";
	document.all.whatsHappeningDiv.style.visibility = "hidden";
}

  function turnOffProperties() {
	document.all.propertiesDiv.style.visibility = "hidden";
  }

  function turnOnLocations() {
	document.all.locationsDiv.style.visibility = "visible";
 	document.all.propertiesDiv.style.visibility = "hidden";
	document.all.travelInfoDiv.style.visibility = "hidden";
	document.all.ratesDiv.style.visibility = "hidden";
	document.all.whatsHappeningDiv.style.visibility = "hidden";
 }

  function turnOffLocations() {
	document.all.locationsDiv.style.visibility = "hidden";
  }

  function turnOnRates() {
	document.all.ratesDiv.style.visibility = "visible";
	document.all.travelInfoDiv.style.visibility = "hidden";
	document.all.locationsDiv.style.visibility = "hidden";
 	document.all.propertiesDiv.style.visibility = "hidden";
	document.all.whatsHappeningDiv.style.visibility = "hidden";
  }

  function turnOffRates() {
	document.all.ratesDiv.style.visibility = "hidden";
  }

  function turnOnTravelInfo() {
	document.all.travelInfoDiv.style.visibility = "visible";
	document.all.ratesDiv.style.visibility = "hidden";
	document.all.locationsDiv.style.visibility = "hidden";
 	document.all.propertiesDiv.style.visibility = "hidden";
	document.all.whatsHappeningDiv.style.visibility = "hidden";
  }

  function turnOffTravelInfo() {
	document.all.travelInfoDiv.style.visibility = "hidden";
  }

  function turnOnWhatsHappening() {
	document.all.whatsHappeningDiv.style.visibility = "visible";
	document.all.travelInfoDiv.style.visibility = "hidden";
	document.all.ratesDiv.style.visibility = "hidden";
	document.all.locationsDiv.style.visibility = "hidden";
 	document.all.propertiesDiv.style.visibility = "hidden";
  }

  function turnOffWhatsHappening() {
	document.all.whatsHappeningDiv.style.visibility = "hidden";
  }