//preload images for navigation
nav_home_on = new Image();
nav_home_on = 'images/nav_home_on.gif';

nav_facilities_on = new Image();
nav_facilities_on = 'images/nav_facilities_on.gif';

nav_amenities_on = new Image();
nav_amenities_on = 'images/nav_amenities_on.gif';

nav_contact_on = new Image();
nav_contact_on = 'images/nav_contact_on.gif';

nav_weather_on = new Image();
nav_weather_on = 'images/nav_weather_on.gif';

//stop preloadin' images

function navOn(imName) {
		if (document.images) { 
		document.images[imName].src = 'images/' + imName + "_on.gif"
			 };
}
function navOff(imName) {
		if (document.images) { 
		document.images[imName].src = 'images/' + imName + '.gif' 
		};
}