//////  Browser Version Compatibility Test
	var browserSniff = false;
	if ( parseInt( navigator.appVersion ) >= 3 ) { browserSniff = true; }
	
	/// Pre-cache Images
	var imgs = new Array();
			imgs = [
		'desert_canyon_on', '/images/header/desert_canyon_on.gif',
		'desert_canyon', '/images/header/desert_canyon.gif',
		'mountains_on', '/images/header/mountains_on.gif',
		'mountains', '/images/header/mountains.gif',		
		'parks_monuments_on', '/images/header/parks_monuments_on.gif',
		'parks_monuments', '/images/header/parks_monuments.gif',
		'other_on', '/images/header/other_on.gif',
		'other', '/images/header/other.gif',
		'activities_on', '/images/header/activities_on.gif',
		'activities', '/images/header/activities.gif',
		'community_on', '/images/header/community_on.gif',
		'community', '/images/header/community.gif',		
		'resources_on', '/images/header/resources_on.gif',
		'resources', '/images/header/resources.gif',
		'site_map_on','/images/header/site_map_on.gif',
		'site_map','/images/header/site_map.gif',
		'profile_on','/images/header/profile_on.gif',
		'profile','/images/header/profile.gif',
		'books_maps_on','/images/header/books_maps_on.gif',
		'books_maps','/images/header/books_maps.gif',
		'submit_on','/images/header/submit_on.gif',
		'submit','/images/header/submit.gif',
		'send_card_on','/images/header/send_card_on.gif',
		'send_card','/images/header/send_card.gif'
		];
	// Do the Preloading
			var cached = new Array();
		for ( var i = 0; i < imgs.length; i = i + 2) { cached[imgs[i]] = new Image();    cached[imgs[i]].src = imgs[(i + 1)]; }

	// Simple Mouseover Script
	function flip(imgName, srcName)
	{ 
		if ( browserSniff )
		{
			if ( cached[srcName] ) { eval('document.images["' + imgName + '"].src = cached["' + srcName + '"].src'); }
			else { var img = new Image();    img.src = srcName;    eval('document.images["' + imgName + '"].src = img.src'); }
		}
	}


	/////// CHANGE URL
	function goTo(url)
	{
	//var url = window.document.header_form.url.options[selectedIndex].text;
	window.location.href=url;
	}