var aNormal, aFocus;
var bLoaded = false;
var currNb = -1;
function preloadImages(currPage)
{
	currNb = currPage;
	if (! document.images)
		return;

	aNormalTop = new Array(5);
	aFocusTop = new Array(5);
	aNormalBottom = new Array(5);
	aFocusBottom = new Array(5);
	for (i = 0; i < 6; i ++)
	{
		aNormalTop[i] = new Image(82, 8);
		aNormalTop[i].src = "images/" + i + "sus.jpg";
		aFocusTop[i] = new Image(82, 8);
		aFocusTop[i].src = "images/" + i + "susf.jpg";
		aNormalBottom[i] = new Image(82, 10);
		aNormalBottom[i].src = "images/" + i + "1.jpg";
		aFocusBottom[i] = new Image(82, 10);
		aFocusBottom[i].src = "images/" + i + "1f.jpg";
	}
	bLoaded = true;
}

function chgImg(imgNb, on)
{
	if (document.images && bLoaded && (imgNb != currNb))
	{
		document.images["imgs" + imgNb].src = (on ? aFocusTop : aNormalTop)[imgNb].src;
		document.images["imgj" + imgNb].src = (on ? aFocusBottom : aNormalBottom)[imgNb].src;
	}
	
	return true;
}