function openWindow(strUrl, option) {
	if (option=='') option='height=600,width=450,status=0,toolbar=0,menubar=0,location=0,resizable=1,scrollbars=1';

	if (window.opener) window.location=strUrl;
	else {
		wdw = window.open(strUrl, 'popup', option);
		wdw.focus();
	}
}

function aleatoire() {
	var num=Math.floor(Math.random()*5)+1;
	document.getElementById("logo").src="i/taches_0"+num+".gif";
}