var dtCh= "/";
var minYear=1900;
var maxYear=2100;

function isInteger(s)
{
	
    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 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 strDay=dtStr.substring(0,pos1)
	var strMonth=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 : dd/mm/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){
		alert("Please enter a valid 4 digit year")
		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 validateDate(dt){
	
	if (!isDate(dt)){	
		dt='';
		return false;
	}
    return true;
 }
/*For Checking Future Date*/

function validateFuture(dat)
{
        var jsonrpc = null;
		if(jsonrpc == null)
		{
			jsonrpc= new JSONRpcClient("JSON-RPC");
		}
		 var dt = jsonrpc.utility.getCurrentDateString();
		 
		 var serverDate=new Array();
		  serverDate = dt.split("/");
		// alert("noe");
      //  var day = dt.getDate();
      //	var month = dt.getMonth();
      //  var year = dt.getFullYear();
        
        var splitDate = new Array();
       
        splitDate = dat.split("/");
        
        
       //  alert("serverDate[0]="+serverDate[0]+"splitDate[0]"+splitDate[0]);
      //   alert("serverDate[1]="+serverDate[1]+"splitDate[1]"+splitDate[1]);
       //  alert("serverDate[2]="+serverDate[2]+"splitDate[2]"+splitDate[2]);
        if(eval(splitDate[2]) > eval(serverDate[2]))
        {
                alert('Enter Past or Current Date');
                return false;
        }
        else if(eval(splitDate[2]) < eval(serverDate[2]))
        {       
                return true;
        }
        else if(eval(splitDate[2]) == eval(eval(serverDate[2])))
        {
                if(eval(splitDate[1]) > eval(serverDate[1] ))
                {
                        alert('Enter Past or Current Date');
                        return false;
                }
                else if(eval(splitDate[1]) < eval(serverDate[1]))
                {                      
                        return true;
                }
                else if(eval(splitDate[1]) == eval(serverDate[1]))
                {
                        if(eval(splitDate[0]) > eval(serverDate[0]))
                        {
                                alert('Enter Past or Current Date');
                                return false;
                        }
                        else if(eval(splitDate[0]) <= eval(serverDate[0]))
                        {                                
                                return true;
                        }
                }
        }

        return true;
}