function show_thumb(opt,maxx) {
	for (i=1;i<=6;i++) {
		document.getElementById('thumb_'+i+'_gran').style.display = 'none';
	}
	document.getElementById('thumb_'+opt+'_gran').style.display = 'block';
}

function close_thumb(opt) {
	document.getElementById(opt).style.display = 'none';	
}

function change_photo_stand(photo) {
	document.getElementById('foto_gran').innerHTML = '<img src=img/stands/'+photo+'.jpg>';
}

function change_croquis(stand,opt) {
	document.getElementById('croquis_gran').innerHTML = '<img src=img/stands/croquis/croquis_'+stand+'_'+opt+'.jpg class=croquis>';
}