zoom = function(state) { 
	var z = document.getElementById('imgzoom').style;
	if (state) {
		z.visibility = 'visible';
	} else {
		z.visibility = 'hidden';
	}
}
bigstyle = function (state) {
	var big = document.getElementById('bigimg');
	if (state) {
		big.style.height = '600px';
		document.getElementById('retour').style.visibility = 'visible';
	} else {
		big.style.height = '0px';
		document.getElementById('retour').style.visibility = 'hidden';
		big.innerHTML = '';
	}
}
display = function (img) {
	var big = document.getElementById('bigimg');
	var src = 'photos/big/'+img;
	var tag = '<a href="#top" onClick="bigstyle(false)" class="noborder"><img src="'+src+'"><\/a>';
	bigstyle(true);
	big.innerHTML = tag;
	document.location = "#grande";
}