function rand_number(n)
{
	var x;
	x=Math.round(Math.random()*100);
	x%=n;
	return x;
}
function banner()
{
	var img = new Array();
	<!-- vous pouvez rajouter ou supprimez des images -->
img[0]='<a href="body_care_reduction_adiposity.php"><img src="http://www.libinvest.com/en/images/SHDB_Public_EN.jpg" border="0" width="190" height="510" alt="SHDB"></a>';
img[1]='<img src="http://www.libinvest.com/en/images/Slimmer-Plate_Public_EN.jpg" border="0" width="190" height="510" alt="Slimmer-Plate">';
img[2]='<img src="http://www.libinvest.com/en/images/banner-beautypartner_EN.jpg" border="0" width="190" height="510" title="Audio file..." onmouseover="play_song();" onmouseout="stop_song();">';
	<!-- attention, le nombre entre parenthese doit etre egal aux derniers entre crochet +1 exemple : ici 2+1=3 -->
	var n=rand_number(3); 
	document.write(img[n]);
}