var image = new Array();
	image = ['/images/contact.gif',
	'/images/liste.gif',
	'/images/suggestions.gif',
	'/images/prefet.gif'
	];
		   
	lien = ["/services/institutionnel/contact.php",
			"/services/liste_diffusion/index.php",
			"/services/institutionnel/index.php",
			"/services/liste_diffusion/index.php"
	];		   

	random = Math.round(Math.random() * (image.length-1));
	document.write('<a href="'+lien[random]+'" border="0" />');
	document.write('<img name="bouton" id="bouton" border="0" class="block" src="'+image[random]+'" />');
	document.write('</a>');