function leasauto()
   {
//lettura dati
  var c = parseFloat (document.form1.capitale.value);
  var u = parseFloat (document.form1.usato.value);
  var a = parseFloat (document.form1.anticipo.value);
  var f = parseFloat (document.form1.finale.value);
  var nr = parseFloat (document.form1.nr.value);
  var i = parseFloat (document.form1.tasso.value);


var pr = (c-(u+a+f))/nr;
var of = ((c-(u+a))+f)*(i/2400);
var iva = Math.ceil(((pr + of)*(20/100))*100)/100;
var rata = Math.ceil(((pr + of)*(1+(20/100)))*100)/100;
var fin= (c-(u+a));
 document.form1.fin.value= (c-(u+a));
 document.form1.iva.value= iva;
 document.form1.tot.value= rata;
 document.form1.rata.value= Math.ceil((pr + of)*100)/100;

	var j=0; //contatore
	var nrj=0;
	var fj=f;
	var ivaj=  Math.ceil(((pr + of)*(20/100))*100)/100; //iva
	var rataj= Math.ceil((pr+of)*100)/100; //iva
    var dj=(rataj+ivaj)*j; //quota capitale

   var G="<table bgcolor=\"white\" border=\"3\" width=\"60%\" bordercolor=\"gray\" cellpadding=\"2\" cellspacing=\"3\"><tr><td colspan=\"4\" align=\"center\"><font color=\"blue\"><b\>Calcoli &amp; Calcoli</b></font></td></tr><tr><td colspan=\"4\" align=\"center\"><font color=\"blue\"><b\>piano di rientro</b></font></td></tr><tr><td align=\"center\"><b\>mens.</b></td><td align=\"center\"><b\>rata</b></td><td align=\"center\"><b\>iva</b></td><td align=\"center\"><b\>capitale</b></td><tr>";


	for (j=1;j<=nr;++j)
		{
		ij=((c-(u+a))+f)*(i/2400);
		rj= Math.ceil(((c-(u+a+f))/nr)+(((c-(u+a))+f)*(i/2400))*100)/100;
		pj=nr-j;
	    fj=f;
		dj+=(rataj+ivaj)*j;
		
    G+="<tr><td align=\"center\"><b\>"+j+"</b></td><td align=\"center\"><b\>"+rataj+"</b></td><td align=\"center\"><b\>"+ivaj+"</b></td><td align=\"center\"><b\>"+Math.ceil(((rataj+ivaj)*j)*100)/100+"</b></td><tr>";
}
	G+="<tr><td colspan=\"4\" align=\"center\"><font color=\"blue\"><b\>riepilogo</b></font></td></tr>"
    G+="<tr><td align=\"center\" colspan=\"2\"><b\>totale rimborsato</b></td><td align=\"center\"><b\>totale iva</b></td><td align=\"center\"><b\>riscatto</b></td></tr>";
    G+="<tr><td align=\"center\" colspan=\"2\"><b\>"+Math.ceil((rataj*nr)*100)/100+"</b></td><td align=\"center\"><b\>"+Math.ceil((ivaj*nr)*100)/100+"</b></td><td align=\"center\"><b\>"+fj+"</b></td></tr>";
	G+="</table>"; //chiusura tabella
	
	 if (isNaN(rata) ) 
   alert(rata + " = " + "Not at Number!"); 
   else document.getElementById('div0').innerHTML=G;
}

function nuovo_contenuto(){
 if(document.getElementsByTagName){
  body = document.getElementsByTagName("body").item(0);
  if(body.innerHTML){
   codice  = "<br>"+document.getElementById('livello2').innerHTML+document.getElementById('livello1').innerHTML+"<p align='center'><input type=\"button\" value=\"stampa\" style=\"font-family: Verdana; color: #0000FF\" onclick='javascript:window.print()'>\  \<input type=\"button\" value=\"indietro\" style=\"font-family: Verdana; color: #0000FF\" onclick='javascript:location.reload()'></p><br>"; 
   body.innerHTML= codice;
  }
}

}