function visualizza(id){
  if (document.getElementById){
    if(document.getElementById(id).style.display == 'none' ||
    document.getElementById(id).style.display == ''){
      document.getElementById(id).style.display = 'block';
    }else{
      document.getElementById(id).style.display = 'none';
    }
  }
}

/*----------------------menu----------------------------------------------*/

object1TopInizio = 230
object1TopDopo = 10

function setVariables() {
	if (navigator.appName == "Netscape") {
		if (parseInt(navigator.appVersion) >= 5) {
			v=".top=";
			dS="document.getElementById(\"";
			sD="\").style";
			y="window.pageYOffset";
		} else {
			v=".top=";
			dS="document.";
			sD="";
			y="window.pageYOffset";
		}
	} else {
		v=".pixelTop=";
		dS="";
		sD=".style";
		y="document.body.scrollTop";
	}
	checkLocationA()
}

movey=0,ydiff=0,ystart=0

function checkLocation() {
	object="object1";
	yy=eval(y);
	ydiff=ystart-yy;
	if ((ydiff<(-1))||(ydiff>(1)))
		movey=Math.round(ydiff/10),ystart-=movey
	if (ystart>=object1TopInizio) {
		eval(dS+object+sD+v+(ystart+object1TopDopo));
	} else {
		eval(dS+object+sD+v+object1TopInizio);
	}
	setTimeout("checkLocation()",10);
}

function checkLocationA() {
	ystart=eval(y);
}

window.onload="javascript:setVariables(); checkLocation();"

/*----------------------fine menu----------------------------------------------*/