function addbookmark(){
	

  title = document.title; 
  url = window.location.href;
	
	  if (window.sidebar) { // Mozilla Firefox Bookmark
         window.sidebar.addPanel(title, url,"");
     } else if( window.external ) { // IE Favorite
         window.external.AddFavorite( url, title); }
     else if(window.opera && window.print) { // Opera Hotlist
         return true; }
  }
	
/*	if (window.external ) {
	    // versione IE
	    window.external.AddFavorite( location.href, document.title); 
	} else if (window.sidebar) {
	    // versione FF
	    window.sidebar.addPanel(document.title, location.href,'');
	}*/
	
function showHide(aDiv) {
	document.getElementById(aDiv).style.display = (document.getElementById(aDiv).style.display == "block" ? "none" : "block");
}