/**
 * Préchargement des images
 */
if (document.images) {
	
	image1 		= new Image(176, 182);
	image1.src	= "sptp/images_v2/cadre1_on.png";
	image2 		= new Image(166, 182);
	image2.src	= "sptp/images_v2/cadre2_on.png";
	image3 		= new Image(160, 182);
	image3.src	= "sptp/images_v2/cadre3_on.png";
	image4 		= new Image(176, 182);
	image4.src	= "sptp/images_v2/cadre4_on.png";
	image5 		= new Image(166, 182);
	image5.src	= "sptp/images_v2/cadre5_on.png";
	image6 		= new Image(160, 182);
	image6.src	= "sptp/images_v2/cadre6_on.png";
	
	image7 		= new Image(141, 102);
	image7.src	= "sptp/images_v2/cat1_on.png";
	image8 		= new Image(141, 80);
	image8.src	= "sptp/images_v2/cat2_on.png";
	image9 		= new Image(141, 73);
	image9.src	= "sptp/images_v2/cat3_on.png";
	image10		= new Image(140, 102);
	image10.src	= "sptp/images_v2/cat4_on.png";
	image11		= new Image(140, 80);
	image11.src	= "sptp/images_v2/cat5_on.png";
	image12		= new Image(140, 73);
	image12.src	= "sptp/images_v2/cat6_on.png";

	image13		= new Image(142, 63);
	image13.src	= "sptp/images_v2/menu1_on.png";
	image14		= new Image(119, 63);
	image14.src	= "sptp/images_v2/menu2_on.png";
	image15		= new Image(121, 63);
	image15.src	= "sptp/images_v2/menu3_on.png";
	image16		= new Image(74, 63);
	image16.src	= "sptp/images_v2/menu4_on.png";
	image17		= new Image(70, 63);
	image17.src	= "sptp/images_v2/menu5_on.png";
}


/**
 * Rollover / Rollout
 */
function allumerImage(image_fichier, image_id) {
	
	image_racine = image_fichier;
	image_racine = image_racine.replace(/_off.png/, "");
	image_racine = image_racine.replace(/_on.png/, "");
	
	if (document.images) {
		if (document.images[image_id].src.indexOf("_on.png") == -1) {
			document.images[image_id].src = image_racine + "_on.png";
		} else {
			document.images[image_id].src = image_racine + "_off.png";
		}
	}
}