// active state of tabs

	var currentState = '';



	$(document).ready(function() {

		showAdvert(); // showing advert

	});

	

/*

	// hide advert

	$(document).ready(function() {

		$('#galleryFlashAdvert').hide();

		currentState = 'imagery';

	});

*/

	

	// cache all the rollover image states

	function cacheTabs() {

		new Image().src = 'images/tab_gallery_imagery_off.gif';

		new Image().src = 'images/tab_gallery_imagery_off_advert_on.gif';

		new Image().src = 'images/tab_gallery_advert_on.gif';

		new Image().src = 'images/tab_gallery_advert_on.gif';

		new Image().src = 'images/tab_gallery_imagery_over.gif';

		new Image().src = 'images/tab_gallery_imagery_over_advert_off.gif';

		new Image().src = 'images/tab_gallery_imagery_off.gif';

		new Image().src = 'images/tab_gallery_advert_over.gif';

	}

	

	

	// show the imagery video

	function showImagery() {

		$('#galleryFlashAdvert').hide();

		$('#galleryFlashImagery').show();

		document.getElementById('tabImagery').src = 'images/tab_gallery_imagery_on.gif';

		document.getElementById('tabMid').src = 'images/tab_gallery_imagery_on_advert_off.gif';

		document.getElementById('tabAdvert').src = 'images/tab_gallery_advert_off.gif';

		currentState = 'imagery';

	}

	

	// show the adveritement video

	function showAdvert() {

		$('#galleryFlashAdvert').show();

		$('#galleryFlashImagery').hide();

		//document.getElementById('tabImagery').src = 'images/tab_gallery_imagery_off.gif';

		//document.getElementById('tabMid').src = 'images/tab_gallery_imagery_off_advert_on.gif';

		//document.getElementById('tabAdvert').src = 'images/tab_gallery_advert_on.gif';

		currentState = 'advert';

		showFLV( document.getElementById('movie_name').value );

	}

	

	// rollover tabs

	function rollImagery() {

		if (currentState == 'advert') {

			document.getElementById('tabImagery').src = 'images/tab_gallery_imagery_over.gif';

			document.getElementById('tabMid').src = 'images/tab_gallery_imagery_over_advert_off.gif';

		}

	}

	

	function rollBackImagery() {

		if (currentState == 'advert') {

			document.getElementById('tabImagery').src = 'images/tab_gallery_imagery_off.gif';

			document.getElementById('tabMid').src = 'images/tab_gallery_imagery_off_advert_on.gif';

		}

	}

	

	function rollAdvert() {

		if (currentState == 'imagery') {

			document.getElementById('tabAdvert').src = 'images/tab_gallery_advert_over.gif';

			document.getElementById('tabMid').src = 'images/tab_gallery_imagery_off_advert_over.gif';

		}

	}

	

	function rollAdvertBack() {

		if (currentState == 'imagery') {

			document.getElementById('tabAdvert').src = 'images/tab_gallery_advert_off.gif';

			document.getElementById('tabMid').src = 'images/tab_gallery_imagery_on_advert_off.gif';

		}

	}

	

	function showFLV( video ) {

		var so = new SWFObject( video , "movie", "540", "345", "7.0.0.0", "#ffffff");

    	so.addParam("wmode", "transparent");

    	so.addVariable("lang", "gb_en");

    	so.write("featuresFlash");

	}

	

	function showImage( img ) {

		$('#container').hide();

		document.getElementById('containerImage').src = 'images/gallery_picture_' + img + '.jpg';

		$('#container').show();

	}

	

	function closeImage() {

		$('#container').hide();

		document.getElementById('containerImage').src = null;

	}