var dtCh= "/";
var minYear=1900;
var maxYear=4000;

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

function isDate(dtStr){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strMonth=dtStr.substring(0,pos1)
	var strDay=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		//alert("The date format should be : mm/dd/yyyy")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		//alert("Please enter a valid month")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		//alert("Please enter a valid day")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		//alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		//alert("Please enter a valid date")
		return false
	}
return true
}

function ValidateForm(){
	var dt=document.frmSample.txtDate
	if (isDate(dt.value)==false){
		dt.focus()
		return false
	}
    return true
 }



function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail ID")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail ID")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

 		 return true					
	}


 function checkform()
    {
    var filter = /^[0-9]+$/;
        if(document.getElementById("txtEmail").value!="" && document.getElementById("txtEmail").value!="Email Id")
        {
            if(!echeck(document.getElementById("txtEmail").value))
            {
               // alert('Please enter correct email');
                return false;
            }
        }
//        var indate=document.getElementById("ddlMonthIn").value+"/"+document.getElementById("ddlDayIn").value+"/"+document.getElementById("ddlYearIn").value;
//        if(!isDate(indate))
//        {
//            alert('Please enter correct Check In Date');
//                return false;
//        }
//        else if(check(indate)=="-1")
//        {  
//            alert('Check In Date has expired, please select another date');
//                return false;
//        }
        
        
//        var outdate=document.getElementById("ddlMonthOut").value+"/"+document.getElementById("ddlDayOut").value+"/"+document.getElementById("ddlYearOut").value;
//        if(!isDate(outdate))
//        {
//            alert('Please enter correct Check Out Date');
//                return false;
//        }
//        else if(comparedates(outdate,indate)!="1")
//        {
//              alert('Check Out Date has expired, please select another date');
//                return false;
//        }
        
        if(document.getElementById("txtAdults").value!="")
        {
            if(!filter.test(document.getElementById("txtAdults").value))
            {
                alert('No of Adults not in correct format');
                return false;
            }
        }
        
          if(document.getElementById("txtChildrens").value!="")
        {
            if(!filter.test(document.getElementById("txtChildrens").value))
            {
                alert('No of Childrens not in correct format');
                return false;
            }
        }
       // alert('success');
     //return false;
     return true;
    }
    
    function checkall()
    {var filter = /^[0-9]+$/;
        if(!checkform())
        {
            return false;
        }
        if(document.getElementById("txtMobile").value=="")
        {
         document.getElementById("txtMobile").focus();
            alert('Please enter mobile no');
            return false;
           
        }
       if(!filter.test(document.getElementById("txtMobile").value))
            {
             document.getElementById("txtMobile").focus();
                alert('Invalid mobile number');
                return false;
            }
    }
    
    function check(valDate)
{
     var todaydate=new Date();
      var x=(parseInt(todaydate.getMonth())+1)+"/"+((todaydate.getDate()<"10")?("0"+todaydate.getDate()):todaydate.getDate())+"/"+ todaydate.getFullYear();
     
     return comparedates(valDate,x);
}

function comparedates(str1,str2)
    {
            if(str1!="")
           {
               var  dt1 =  parseInt(str1.substring(3,5),10);
               var  mon1  =parseInt(str1.substring(0,2),10); 
               var yr1   = parseInt(str1.substring(6,10),10); 
              var date1 = new Date(yr1, mon1, dt1);           
            }
          if(str2!="")
           {
          // alert(str1+"@@"+str2);
               var   dt2  = parseInt(str2.substring(3,5),10);
               var mon2= parseInt(str2.substring(0,2),10); 
               var yr2   = parseInt(str2.substring(6,10),10); 
              var date2 = new Date(yr1, mon1, dt1);           
            }
           // alert(dt2+"@@"+mon2+"@@"+yr2);
        var yr_diff=compare(yr1,yr2);
        var mn_diff=compare(mon1,mon2);
        var day_diff=compare(dt1,dt2);    
        if(yr_diff=="0")
        {         
            if(mn_diff=="0")
            {
                if(day_diff<"0")
                {
                    return -1;
                }
                else if(day_diff=="0")
                { 
                    return 0;
                }
                else
                    return 1;
            }
            else if(mn_diff<"0")
            {
               return -1;
            }
            else
            {
                 return 1;
            }
        }
        else if(yr_diff<"0")
        {
            return -1;
        }
        else
        {
            return 1;
        }
    }
    function compare(a,b)
    {
        if((a-b)>0)
        return 1;
        else if((a-b)==0)
        return 0 ;
        else  
        return -1;
    }
    
    function RemoveCheckOut()
    {
        var x=document.getElementById("ddlDayOut");
        for(var i=1; i<=document.getElementById("ddlDayIn").value;i++)
        {
            x.remove(0);
        }
        
    }
    
    function LoadDays()
    {
         var todaydate=new Date();
        var todayDay=todaydate.getDate();
        var todayMonth=todaydate.getMonth()+1;
        var todayYear=todaydate.getFullYear();
        
    }