function redimensionner(){


			var tailleEcran = $(document).height();

			var tailleH = $(window).height();
			var leDoc = document.getElementById("image");

			//alert("tailleEcran "+tailleH);

			if(tailleEcran == tailleH){
				leDoc.style.height = "100%";

			}else{
				leDoc.style.height = (tailleEcran)+"px";
			}
}