function banniere(id)
{
	var nbimage= 20;

	numimage= Math.round(Math.random()*(nbimage-1)+1);
	if (numimage <= 10)
	{
		document.getElementById(id).style.backgroundImage = 
			'url(/image/image_gallery?uuid=b9579344-19f8-4b2f-bdf7-252b77200040&groupId=10128&t=1242042637951)';
	
	}
	if (numimage > 10)
	{
		document.getElementById(id).style.backgroundImage = 
			'url(/image/image_gallery?uuid=26327f17-2db1-4c28-a59a-6e9d81181c4d&groupId=10128&t=1242042637961)';
	}

}