// JavaScript Document
function isName(what,fname)
{
var i=new RegExp("([a-zA-Z\ ]{3,})");
if(!i.test(what)) { alert("Il "+fname+" inserito non è valido!"); return false} 
return true;
}
function isEmail(what)
{
var i=new RegExp("^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$");
if(!i.test(what)) { alert("E-MAIL inserita non è valida!"); return false} 
return true;
}
function validateForm(frm)
{
if(!isName(frm.nome.value,'NOME')) return false;
if(!isName(frm.cognome.value,'COGNOME')) return false;
if(!isEmail(frm.email.value)) return false;
return confirm("Confermi l'inserimento dei dati?");
}

<!--
function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_validateForm() { //v4.0
  var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
  for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=MM_findObj(args[i]);
    if (val) { nm=val.name; if ((val=val.value)!="") {
      if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
        if (p<1 || p==(val.length-1)) errors+='- '+nm+' deve contenere un indirizzo email valido.\n';
      } else if (test!='R') { num = parseFloat(val);
        if (isNaN(val)) errors+='- '+nm+' must contain a number.\n';
        if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
          min=test.substring(8,p); max=test.substring(p+1);
          if (num<min || max<num) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n';
    } } } else if (test.charAt(0) == 'R') errors += '- '+nm+' deve essere compilato.\n'; }
  } if (errors) alert('Attenzione:\n'+errors);
  document.MM_returnValue = (errors == '');
}
//-->

// menu dropdown librerie
/*javascript per menu espandibile*/

/*window.onload=function(){

if(document.getElementsByTagName && document.getElementById){

    document.getElementById("navlib").className="jsenable";

    BuildList();

    }

}



function BuildList(){

var hs=document.getElementById("navlib").getElementsByTagName("h3");

for(var i=0;i<hs.length;i++){

    hs[i].onclick=function(){

        this.parentNode.className=(this.parentNode.className=="mostra") ? "nascondi" : "mostra";

        }

    }

} /*