function showPage () {
	
		if (document.getElementById('page')){
		document.getElementById('page').style.display = 'block';
		}
		if (document.getElementById('header_start')){
		document.getElementById('header_start').style.display = 'block';
		}
		if (document.getElementById('intro')){
		document.getElementById('intro').style.display = 'none';
		}
	
}