function cambiar (flag,img) {
	if (document.images) {
		if (document.images[img].permitirloaded) {
			if (flag==1) document.images[img].src = document.images[img].permitir.src
			else document.images[img].src = document.images[img].permitir.oldsrc
			}
		}
	}
function preloadcambiar (img,adresse) {
	if (document.images) {
		img.onload = null;
		img.permitir = new Image ();
		img.permitir.oldsrc = img.src;
		img.permitir.src = adresse;
		img.permitirloaded = true;
	}
}// JavaScript Document