function isInteger (s)
   {
      var i;

      if (isEmpty(s))
      if (isInteger.arguments.length == 1) return 0;
      else return (isInteger.arguments[1] == true);

      for (i = 0; i < s.length; i++)
      {
         var c = s.charAt(i);

         if (!isDigit(c)) return false;
      }

      return true;
   }
   function isEmpty(s)
   {
      return ((s == null) || (s.length == 0))
   }

   function isDigit (c)
   {
      return ((c >= "0") && (c <= "9"))
   }

function checkDates()
{
  var cdayin, cmonthin, cyearin, cdayout, cmonthout, cyearout;
//  with(document.formrezervari)
//  {
    cdayin      = document.formrezervari.inDay.options[document.formrezervari.inDay.selectedIndex].value;
    cmonthin    = document.formrezervari.inMonth.options[document.formrezervari.inMonth.selectedIndex].value-1;
    cyearin     = document.formrezervari.inYear.options[document.formrezervari.inYear.selectedIndex].value;
    cdayout     = document.formrezervari.outDay.options[document.formrezervari.outDay.selectedIndex].value;
    cmonthout   = document.formrezervari.outMonth.options[document.formrezervari.outMonth.selectedIndex].value-1;
    cyearout    = document.formrezervari.outYear.options[document.formrezervari.outYear.selectedIndex].value;
//  }
var date1 = new Date();
date1.setFullYear(cyearin,cmonthin,cdayin);
var date2 = new Date();
date2.setFullYear(cyearout,cmonthout,cdayout);

var date1Comp = date1.getTime(); // milliseconds
var date2Comp = date2.getTime();


if (date1Comp >= date2Comp)
{
alert ("Checkout date must be after checkin date!");
return false;
} else {
return true;
}
}

function checkRooms()
{
  var csingle, csuites, cjacuzzi, cdouble;
  with(window.document.roomsform)
  {
    csingle = rooms1;
    csuites = rooms2;
    cjacuzzi = rooms3;
    cdouble = rooms4;
  }
  if (isInteger(csingle.value) || csingle.value == "")
  {
    error=0;
  } else {
    error=1;
  }
  if (isInteger(csuites.value) || csuites.value == "")
  {
    error+=0;
  } else {
    error+=1;
  }
  if (isInteger(cjacuzzi.value) || cjacuzzi.value == "")
  {
    error+=0;
  } else {
    error+=1;
  }
  if (isInteger(cdouble.value) || cdouble.value == "")
  {
    error+=0;
  } else {
    error+=1;
  }
  if (csingle.value == "" && csuites.value == "" && cjacuzzi.value == "" && cdouble.value == "")
  {
    error+=1;
  }
if (error>0 )
{
alert ("Please choose number of rooms");
return false;
} else {
return true;
}

}

function checkForm()
{
   var cname, cemail, csubject, cmessage, ctcard, cncard, ccverif, cnpos, cdexp;
   with(window.document.msgform)
   {
      cname    = name;
      ccountry = country;
      cemail   = email;
      cphone   = phone;
      ctcard   = tcard;
      cncard   = ncard;
      ccverif  = cverif;
      cnpos    = npos;
      cdexp   = dexp;
      
   }

   if(trim(cname.value) == '')
   {
      alert('Please enter your name');
      cname.focus();
      return false;
   }
   else if(trim(ctcard.value) == '')
   {
      alert('Please enter credit card type');
      ctcard.focus();
      return false;
    }
    else if(trim(cncard.value) == '')
    {
      alert('Please enter credit card number');
      cncard.focus();
      return false;
    }
    else if(trim(ccverif.value) == '')
    {
      alert('Please enter verification code');
      ccverif.focus();
      return false;
    }
    else if(trim(cnpos.value) == '')
    {
      alert('Please enter card holders name');
      cnpos.focus();
      return false;
    }   
    else if(trim(cdexp.value) == '')
    {
      alert('Please enter expiration date');
      cdexp.focus();
      return false;
    }
   else if(trim(cphone.value) == '')
   {
      alert('Please enter your phone number');
      cphone.focus();
      return false;
   }
   else if(trim(cemail.value) == '')
   {
      alert('Please enter your email');
      cemail.focus();
      return false;
   }
   else if(!isEmail(trim(cemail.value)))
   {
      alert('Email address is not valid');
      cemail.focus();
      return false;
   }
   else if(trim(ccountry.value) == '')
   {
      alert('Please enter your country');
      country.focus();
      return false;
   }
   else
   {
      cname.value    = trim(cname.value);
      ccountry.value = trim(ccountry.value);
      cemail.value   = trim(cemail.value);
      cphone.value   = trim(cphone.value);
      ctcard.value = trim(ctcard.value);
      cncard.value = trim(cncard.value);
      ccverif.value = trim(ccverif.value);
      cnpos.value = trim(cnpos.value);
      cdexp.value = trim(cdexp.value);
      return true;
   }
}
function trim(str)
{
   return str.replace(/^\s+|\s+$/g,'');
}
/*
Check if a string is in valid email format.
Returns true if valid, false otherwise.
*/
function isEmail(str)
{
   var regex = /^[-_.a-z0-9]+@(([-_a-z0-9]+\.)+(ad|ae|aero|af|ag|ai|al|am|an|ao|aq|ar|arpa|as|at|au|aw|az|ba|bb|bd|be|bf|bg|bh|bi|biz|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|com|coop|cr|cs|cu|cv|cx|cy|cz|de|dj|dk|dm|do|dz|ec|edu|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gh|gi|gl|gm|gn|gov|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|in|info|int|io|iq|ir|is|it|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|mg|mh|mil|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|museum|mv|mw|mx|my|mz|na|name|nc|ne|net|nf|ng|ni|nl|no|np|nr|nt|nu|nz|om|org|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|pro|ps|pt|pw|py|qa|re|ro|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|so|sr|st|su|sv|sy|sz|tc|td|tf|tg|th|tj|tk|tm|tn|to|tp|tr|tt|tv|tw|tz|ua|ug|uk|um|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|yu|za|zm|zw)|(([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5])\.){3}([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5]))$/i;
   return regex.test(str);
}