function isnum(obj) {
if (isNaN(obj.value) || parseInt(obj.value)<0 || parseInt(obj.value) > 9999)
{
alert('Nel campo è possibile immettere solo numeri!');
obj.value="";
obj.focus();
}
}

	
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

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_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

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+' non valida.\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+' obbligatoria.\n'; 
		}
	} 
if (errors) 
	alert('Errore:'+errors);
	document.MM_returnValue = (errors == '');
}



function MM_displayStatusMsg(msgStr) { //v1.0
  status=msgStr;
  document.MM_returnValue = true;
}

function abilita() {
	if(document.getElementById('privacy').checked) document.getElementById('invia').disabled=false;
	else document.getElementById('invia').disabled=true;
	}