function openclose(name){
			if (document.getElementById(name).style.display == 'none'){
				document.getElementById(name).style.display = 'block';
			}else{
				document.getElementById(name).style.display = 'none';
			}
}

function change_foto(foto, name){
			document.getElementById('big_foto').src = foto;
			document.getElementById('big_foton').innerHTML = name;
}