function choixStyle( style ){
	document.getElementById('feuille_de_style').href = "home/"+style;

	var xhr_object = null;
	
	if(window.XMLHttpRequest){ // Firefox
	   xhr_object = new XMLHttpRequest();
	}else if(window.ActiveXObject){ // Internet Explorer
		xhr_object = new ActiveXObject("Microsoft.XMLHTTP");
	}else{ // XMLHttpRequest non supporté par le navigateur
		alert("Votre navigateur ne supporte pas les objets XMLHTTPRequest...");
		return;
	}
	
	var method   = "POST";
	var filename = "home/ajax.cookie_css.php";
	var requete  = "style=" + style;
		
	xhr_object.open(method, filename, true);
	xhr_object.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	xhr_object.send(requete);
}