function envoyer(r) {
	location.href = "/envoyer-a-un-ami/?r="+r;
}

function redirprint(r) {
	location.href = r+"?print=1";
}

var btprev = 'portfolio';
function showbt(bt) {
	document.getElementById(btprev).style.display = "inline";
	document.getElementById(btprev+'a').style.display = "none";
	document.getElementById(bt).style.display = "none";
	document.getElementById(bt+'a').style.display = "inline";

	document.getElementById("portlet_"+btprev).style.display = "none";
	document.getElementById("portlet_"+bt).style.display = "block";
	
	btprev = bt;
	return false;
}