function SubmitForm()
{
var bRet=true;

  if (document.forms[0].name.value=="")
  { 
		if (bRet==true)
		{
  		alert("Insert your name");
  		document.forms[0].name.focus();
  		bRet= false;
		} 		
	}
  if (document.forms[0].email.value=="")
  { 
		if (bRet==true)
		{
  		alert("Insert your email");
  		document.forms[0].email.focus();
  		bRet= false;
		} 		
	}
  if ((document.forms[0].check_in_gg.value=="") || (document.forms[0].check_in_mm.value=="") || (document.forms[0].check_in_aaaa.value==""))
  { 
		if (bRet==true)
		{
  		alert("Date incomplete");
  		document.forms[0].check_in_gg.focus();
  		bRet= false;
		} 		
	}
  if ((document.forms[0].check_out_gg.value=="") || (document.forms[0].check_out_mm.value=="") || (document.forms[0].check_out_aaaa.value==""))
  { 
		if (bRet==true)
		{
  		alert("Date incomplete");
  		document.forms[0].check_out_gg.focus();
  		bRet= false;
		} 		
	}
  if (document.forms[0].person.value=="")
  { 
		if (bRet==true)
		{
  		alert("Insert n. person");
  		document.forms[0].person.focus();
  		bRet= false;
		} 		
	}
	
	if (bRet==true)
	{
	  document.forms[0].submit();
		return false
	}
}

function intercetta() { 
    for (var i=0; i<document.links.length; i++)
        if (document.links[i].className=="blank") {
            document.links[i].target="_blank";
        } 
}
window.onload = intercetta;