// FUNCTION ROLL-OVER

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}
userAgent = window.navigator.userAgent;
browserVers = parseInt(userAgent.charAt(userAgent.indexOf("/")+1),10);
mustInitImg = true;
function initImgID() {di = document.images; if (mustInitImg && di) { for (var i=0; i<di.length; i++) { if (!di[i].id) di[i].id=di[i].name; } mustInitImg = false;}}
function findElement(n,ly) {
	d = document;
	if (browserVers < 4)		return d[n];
	if ((browserVers >= 6) && (d.getElementById)) {initImgID; return(d.getElementById(n))}; 
	var cd = ly ? ly.document : d;
	var elem = cd[n];
	if (!elem) {
		for (var i=0;i<cd.layers.length;i++) {
			elem = findElement(n,cd.layers[i]);
			if (elem) return elem;
		}
	}
	return elem;
}
function changeImages() {
	d = document;
	if (d.images) {
		var img;
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			img = null;
			if (d.layers) {img = findElement(changeImages.arguments[i],0);}
			else {img = d.images[changeImages.arguments[i]];}
			if (img) {img.src = changeImages.arguments[i+1];}
		}
	}
}

// PRECHARGEMENT DES IMAGES
var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		over_BT_contact = newImage(/*URL*/'images/BT_contact-over.gif');
		over_BT_liens = newImage(/*URL*/'images/BT_liens-over.gif');
		over_BT_qui = newImage(/*URL*/'images/BT_qui-over.gif');
		over_BT_groupages = newImage(/*URL*/'images/BT_groupages-over.gif');
		over_BT_quifaitquoi = newImage(/*URL*/'images/BT_quifaitquoi-over.gif');
		over_BT_livredor = newImage(/*URL*/'images/BT_livredor-over.gif');
		over_BT_camions = newImage(/*URL*/'images/BT_camions-over.jpg');
		over_BT_avions = newImage(/*URL*/'images/BT_avions-over.jpg');
		over_BT_sudouest = newImage(/*URL*/'images/BT_sudouest-over.jpg');
		over_BT_ecuriesdetransit = newImage(/*URL*/'images/BT_ecuriesdetransit-over.jpg');
		over_BT_reseau = newImage(/*URL*/'images/BT_reseau-over.jpg');
		over_BT_print = newImage(/*URL*/'images/BT_print-over.gif');
		preloadFlag = true;
	}
}