/*********** TAB TOGGLE METHODS ***********/
	function setStyle(id, style)
	{
		if (document.getElementById(id)) {
			document.getElementById(id).style.display = style;
		}
	}

	function setClassName(id, classname)
	{
		if (document.getElementById(id)) {
			document.getElementById(id).className = classname;
		}
	}
	
	function showSection(section)
	{
		switch (section) {
			case 'sponsors':
				setStyle('sponsors', 'block');
				setStyle('gallery', 'none');
				setStyle('materials', 'none');
				setStyle('cast', 'none');
				setStyle('reviews', 'none');
				setClassName('sponsors_tab', 'on');
				setClassName('gallery_tab', 'off');
				setClassName('materials_tab', 'off');
				setClassName('cast_tab', 'off');
				setClassName('reviews_tab', 'off');
				break;
			case 'gallery':
				setStyle('sponsors', 'none');
				setStyle('gallery', 'block');
				setStyle('materials', 'none');
				setStyle('cast', 'none');
				setStyle('reviews', 'none');
				setClassName('sponsors_tab', 'off');
				setClassName('gallery_tab', 'on');
				setClassName('materials_tab', 'off');
				setClassName('cast_tab', 'off');
				setClassName('reviews_tab', 'off');
				break;
			case 'materials':
				setStyle('sponsors', 'none');
				setStyle('gallery', 'none');
				setStyle('materials', 'block');
				setStyle('cast', 'none');
				setStyle('reviews', 'none');
				setClassName('sponsors_tab', 'off');
				setClassName('gallery_tab', 'off');
				setClassName('materials_tab', 'on');
				setClassName('cast_tab', 'off');
				setClassName('reviews_tab', 'off');
				break;
			case 'cast':
				setStyle('sponsors', 'none');
				setStyle('gallery', 'none');
				setStyle('materials', 'none');
				setStyle('cast', 'block');
				setStyle('reviews', 'none');
				setClassName('sponsors_tab', 'off');
				setClassName('gallery_tab', 'off');
				setClassName('materials_tab', 'off');
				setClassName('cast_tab', 'on');
				setClassName('reviews_tab', 'off');
				break;
			case 'reviews':
				setStyle('sponsors', 'none');
				setStyle('gallery', 'none');
				setStyle('materials', 'none');
				setStyle('cast', 'none');
				setStyle('reviews', 'block');
				setClassName('sponsors_tab', 'off');
				setClassName('gallery_tab', 'off');
				setClassName('materials_tab', 'off');
				setClassName('cast_tab', 'off');
				setClassName('reviews_tab', 'on');
				break;
		}
	}
	// switch on gallery / sponsors
	if (document.getElementById('sponsors')) {
		showSection('sponsors');
	}
	else if (document.getElementById('gallery')) {
		showSection('gallery');
	}
	else if (document.getElementById('materials')) {
		showSection('materials');
	}
	else if (document.getElementById('cast')) {
		showSection('cast');
	}
	else if (document.getElementById('reviews')) {
		showSection('reviews');
	}	
	/******** END TAB TOGGLE METHODS ***********/