// -------------------------------------------------------------------
// --- FUNZIONI X ROLL-OVER PULSANTI GENERICI ---
// -------------------------------------------------------------------
	function SwapImage (flag,img) {
	   if (document.images) {
	        if (document.images[img].permloaded) {
	            if (flag==1) document.images[img].src = document.images[img].perm.src
	            else document.images[img].src = document.images[img].perm.oldsrc
	        }
	   }
	}
	
	function PreloadImage (img,adresse) {
	   if (document.images) {
	        img.onload = null;
	        img.perm = new Image ();
	        img.perm.oldsrc = img.src;
	        img.perm.src = adresse;
	        img.permloaded = true;
	   }
	}
// -------------------------------------------------------------------
// -------------------------------------------------------------------