function isValid()
{
   chks = new Array( 16 );
   var i;
   var  minSize = parseInt( document.forms[0].MinGroupSize.value );
   var  currSize; 
   var iMax = 6   

   chks[0] = document.forms[0].NumberOfPeople; 
   chks[0].ErrMsg = "Enter number of people, please";
   
   chks[1] = document.forms[0].Sng; 
   chks[1].ErrMsg = "Enter a NUMERIC value, please";
   
   chks[2] = document.forms[0].Dbl;
   chks[2].ErrMsg = "Enter a NUMERIC value, please";

   chks[3] = document.forms[0].Twn;
   chks[3].ErrMsg = "Enter a NUMERIC value, please";
   
   chks[4] = document.forms[0].Trp;
   chks[4].ErrMsg = "Enter a NUMERIC value, please";

   chks[5] = document.forms[0].Apt;
   chks[5].ErrMsg = "Enter a NUMERIC value, please";

   if ( document.forms[0].ISCUNID.value == "" ) {

   iMax = 16
   chks[6] = document.forms[0].FirstName; 
   chks[6].ErrMsg = "Enter your First name, please";
   
   chks[7] = document.forms[0].LastName; 
   chks[7].ErrMsg = "Enter your Last name, please";
   
   chks[8] = document.forms[0].Company; 
   chks[8].ErrMsg = "Enter Company name, please";
   
   chks[9] = document.forms[0].Address; 
   chks[9].ErrMsg = "Enter information about Address, please";
   
   chks[10] = document.forms[0].From; 
   chks[10].ErrMsg = "Enter information about City, please";
   
   chks[11] = document.forms[0].Country; 
   chks[11].ErrMsg = "Enter information about Country, please";
   
   chks[12] = document.forms[0].Phone; 
   chks[12].ErrMsg = "Enter Phone information, please";
   
   chks[13] = document.forms[0].Fax; 
   chks[13].ErrMsg = "Enter Fax information, please";
   
   chks[14] = document.forms[0].EMail; 
   chks[14].ErrMsg = "Enter EMail  information, please";
   
   chks[15] = document.forms[0].ConfirmEMail; 
   chks[15].ErrMsg = "Enter EMail Confirmation information, please";
}
 //---------------------------------------------

   currSize = parseInt( document.forms[0].NumberOfPeople.value );
   
   if ( ( isNaN(currSize) == true ) || ( currSize < minSize ) ) {
       chks[ 0 ].focus();
       alert( "Check your group size! It's less than it should be to be registered.");
       return false;
   }

   if ( (chks[1].value + chks[2].value + chks[3].value + chks[4].value + chks[5].value) == "") {
       chks[ 1 ].focus();
       alert( "Enter number of rooms, please");
       return false;
    }
    else {
      for ( i=1; i<6; i++) {
         if ( chks[ i ].value != "") {
            if ( IsDigitsOnly( chks[ i ], chks[ i ].ErrMsg) == false ) {     	   
                  chks[ i ].focus();
                  return false;
            }
            else {
                 var m = chks[ i ].value.match(/[1-9]+/)
   	 if (null == m) {
   	    alert( "Enter a number more than 0! " )
          	    chks[ i ].focus();
   	    return false;
            }
          }
        }
      }
    }
   
   //---------------------------------------------
   var now = new Date();
   var day = now.getDate();
   var year = now.getFullYear();
   var month = now.getMonth() +1;
	
   var Dobj;
   var Di;
	
   var Mobj;
   var Mi;

   //---------------  Date checking	
	Dobj = document.forms[0].CheckInDay;
	Di = Dobj.selectedIndex

	Mobj = document.forms[0].CheckInMonth;
	Mi = Mobj.selectedIndex
	
	if (Mobj.options[ Mi ].value < month)  year = year + 1;
	if ((Mobj.options[Mi].value == month) && (Dobj.options[Di].value < day))  year = year + 1;
	
	days = getDays( Mobj.options[Mi].value, year);
	if(Dobj.options[Di].value > days) 
	{
		Dobj.focus();
	     alert("Incorrect day number for the month!");
		return false;
	}
	else if (Date.UTC(year, Mobj.options[Mi].value-1, Dobj.options[Di].value) < limitdate)
	{
		msgflag="true";
	     msg="There is not enough time left to process your booking! \n Please specify a date at least " + deadlineDays + " business days ahead of today.";
	     Mobj.focus();
         	alert(msg);
	     return false;
 	}
 	//---------------END of  Date checking
   //---------------------------------------------
if ( iMax == 16) { 
   for ( i=6; i< iMax; i++) {
	if( chks[ i ].value == "") {
	     chks[ i ].focus();
	     alert( chks[ i ].ErrMsg);
		return false;
     }
   }

   //---------------------------------------------
   for ( i=14; i<16; i++) {
      if( IsEmail (chks[ i ], "Enter you REAL E-Mail address") == false) {
           chks[ i ].focus();
           return false;
      }
   }

   if (chks[14].value != chks[15].value ) {
     chks[ 15 ].focus();
     alert( "EMail and Check EMail information are not equal!" );
     return false;
   }
}

 var CityList = document.forms[0].City.options;
 var CityIndex = CityList.selectedIndex;
 var City = CityList[CityIndex].text;

 var coker = getCookie( "GRPS" )
 if (!coker) {
    setCookie( "GRPS", City, inTenMinutes );
     document.forms[0].submit();
 }
  else {
       if ( coker == City ) {
           alert("Your request has been submitted already!");
       }
       else {
          setCookie( "GRPS", City, inTenMinutes );
          document.forms[0].submit();
       }
 }
}