/*
function validateDate(dtControl) 
{
    var input = document.getElementById(dtControl)
    var validformat=/^\d{1,2}\/\d{1,2}\/\d{4}$/ //Basic check for format validity
    var returnval=false
    if (!validformat.test(input.value))
    //alert('Invalid Date Format. Use DD/MM/YYYY')
		return returnval
    else{ //Detailed check for valid date ranges
    var dayfield=input.value.split("/")[0]
    var monthfield=input.value.split("/")[1]
    var yearfield=input.value.split("/")[2]    
    var dayobj = new Date(yearfield, monthfield-1, dayfield)
    if ((dayobj.getMonth()+1!=monthfield)||(dayobj.getDate()!=dayfield)||(dayobj.getFullYear()!=yearfield))
    //alert('Invalid Day, Month, or Year range detected. Please correct.')    
		return returnval
}*/

//for date format validation
//Basic check for format validity
//var validformat=/^\d{1,2}\/\d{1,2}\/\d{4}$/ 


//for phone validation
var digits = "0123456789";
var phoneNumberDelimiters = "()- ";
var validWorldPhoneChars = phoneNumberDelimiters + "+";
var minDigitsInIPhoneNumber = 10;

function isInteger(s)
{   var i;
    for (i = 0; i < s.length; i++)
    {   
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    return true;
}

function stripCharsInBag(s, bag)
{   var i;
    var returnString = "";
    for (i = 0; i < s.length; i++)
    {   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function checkInternationalPhone(strPhone){
s=stripCharsInBag(strPhone,validWorldPhoneChars);
return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}

var emailFilter=/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;

function checkForm()
{
   var ch_name, ch_address, ch_contact, ch_email, ch_request;      
   with(window.document.reserve)
   {
      ch_arrive=arrival_date;
	  ch_depart=departure_date;
	  ch_fname=First_Name;
	  ch_lname=Last_Name;
	  ch_email=email;
	  ch_contact=contact;
	  ch_addr=address;

	  
   }
		var at="@"
		var dot="."
		var str=ch_email.value
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)		
		var atpos=str.indexOf(at)
		var dotpos=str.indexOf(dot)
		var dname= str.substring(atpos+1, dotpos)
		
   if(trim(ch_arrive.value) == '')
   {
      alert('Please select the Arrival Date');
      ch_arrive.focus();
      return false;	 
   }   
      
   else if(trim(ch_depart.value) == '')
   {
      alert('Please select the Departure Date');
      ch_depart.focus();
      return false;	  
   }                
   
   else if(trim(ch_fname.value) == '')
   {
      alert('Please enter your First Name');
      ch_fname.focus();
      return false;	  
   }  
   
   else if(trim(ch_lname.value) == '')
   {
      alert('Please enter your Last Name');
      ch_request.focus();
      return false;	  
   }      
         
   else if(trim(ch_email.value) == '')
   {
      alert('Please enter your Email');
      ch_email.focus();
      return false;	  
   }
   
	else if (!(emailFilter.test(ch_email.value))) { 
       alert("Please enter a valid email address.");
	   ch_email.focus()
	   return false
	}
	
	else if(trim(ch_contact.value) == '')
   {
      alert('Please enter your Contact Number');
      ch_contact.focus();
      return false;	  
   }  
   else if (checkInternationalPhone(ch_contact.value)==false){
		alert("Please Enter a Valid Phone Number")
		ch_contact.focus()
		return false
	}
	 else if(trim(ch_addr.value) == '')
   {
      alert('Please enter your Address');
      ch_addr.focus();
      return false;	  
   }
     
   else
   {      
	 reserve.submit();
      return true;	  
   }
}

function trim(str)
{
   return str.replace(/^\s+|\s+$/g,'');
}