function isRadioSelected(sObj)
     {
         for (var i=0; i < sObj.length; i++)
         {
             if (sObj[i].checked)
                return true;
         }
         return false;
     }

     function isOptSelected(sObj)
     {
         for (var i=0;i<sObj.options.length;i++)
         {
             if (sObj.options[i].selected==true && sObj.options[i].value!="")
                return true;

         }
             return false
     }

     function isBlank(s)
     {
         var len=s.length
         var i
         for (i=0;i<len;++i)
         {
             if (s.charAt(i)!=" ") return false
         }
         return true
     }

     function isEMail(s1)
     {
          var len=s1.length
          var i

          if (s1.indexOf("@")==-1) return false
          if (s1.indexOf("@")==len-1) return false
          if (s1.indexOf(".")==-1) return false
          if (s1.indexOf(".")==len-1) return false
          return true
     }


   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 dtCh="/";
	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
	}
        if (day<10)
           strDay="0" + day;
        if (month<10)
           strMonth="0" + month;
        if (year>10 && year<100)
           strYear="20" + year;
        if (year<10)
           strYear="200" + year;
//        sObj.value=strMonth + "/" + strDay + "/" + strYear;
        return true
    }