function afficher_pub()
	{
		var img = new Array();
		var web = new Array();
		
		img[1] = "img/pub_fm9_pro.gif";
		web[1] = "filemaker_pro.php";
		img[2] = "img/pub_fm9_pro_advanced.gif";
		web[2] = "filemaker_pro_advanced.php";
		img[3] = "img/pub_fm9_server.gif";
		web[3] = "filemaker_server.php";
		img[4] = "img/pub_fm9_server_advanced.gif";
		web[4] = "filemaker_server_advanced.php";
		
		tirage = 1 + Math.floor(Math.random()*4);
		
		document.write('<a href="'+web[tirage]+'"><img src="'+img[tirage]+'" alt=""/></a>');
	}