function NewWindow(mypage,myname,w,h,scroll,pos)
        {
            if(pos=="center")
            {
                LeftPosition=(screen.width)?(screen.width-w)/2:100;
                TopPosition=(screen.height)?(screen.height-h)/2:100;}
                settings='height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',resizable=no';
                win=window.open(mypage,myname,settings);
                if(win.focus){win.focus();
            }
        }

        var dtCh= "-";
        var minYear=1900;
        var maxYear=2100;
        function isInteger1(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 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 || 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 || isInteger1(stripCharsInBag(dtStr, dtCh))==false)
           {
               alert("Please enter a valid date");
               return false;
           }
           return true;
        }

    function comparision(value1, value2)
    {
        if(value1 != "" && value2 != "")
        {
            var firstIndex1 = value1.indexOf ("-");
            var lastIndex1 = value1.lastIndexOf ("-");
            day1 = value1.substring (0, firstIndex1);
            month1 = value1.substring (firstIndex1+1, lastIndex1);
            year1 = value1.substring (lastIndex1+1, value1.length);

            var firstIndex2 = value2.indexOf ("-");
            var lastIndex2 = value2.lastIndexOf ("-");
            day2 = value2.substring (0, firstIndex2);
            month2 = value2.substring (firstIndex2+1, lastIndex2);
            year2 = value2.substring (lastIndex2+1, value2.length)

            var startdate = new Date(year1-0,month1-1,day1-0);
            var enddate = new Date(year2-0,month2-1,day2-0);

            if (startdate <= enddate)
            {
                return true;
            }
            else
            {
                alert('Start date can not be less than end date');
                return false;
            }
        } 
        return true;
    }