var dtCh= "/";
var minYear=1900;
var maxYear=this.getFullYear();
//var yyyy=this.getFullYear();

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 Trim(s) 
   {
  
   	// Remove leading spaces and carriage returns
   	while ((s.substring(0,1) == ' ') || (s.substring(0,1) == '\n') || (s.substring(0,1) == '\r'))
   	 { s = s.substring(1,s.length); }
     
   	// Remove trailing spaces and carriage returns
 while ((s.substring(s.length-1,s.length) == ' ') || (s.substring(s.length-1,s.length) == '\n') || (s.substring(s.length-1,s.length) == '\r'))
   	 { s = s.substring(0,s.length-1); }
     
   	return s;
   }
   
   function daysInMonth(month)
   {
   var days="";
    if(month==1 || month==3 || month==5 || month==7 || month==8 || month==10 || month==12)
    days=31;
//    else if(month==2)
//    days=28;
    else
    days=30;
    return days
    
   }
   
   
   function varifyDate(dtStr)
   {
   var msg="";
    var dtCh= "/";
var minYear=1900;
var maxYear=2011;
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)
}
day=parseInt(strDay)
month=parseInt(strMonth)
year=parseInt(strYr)

if (pos1==-1 || pos2==-1)
{ 

msg+="The date format should be : dd/mm/yyyy!!\n";

//alert("The date format should be : dd/mm/yyyy")
//return false
}
if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth(month))
{
msg+="Please enter a valid day!!\n";

//return false
}
if (strMonth.length<1 || month<1 || month>12)
{
msg+="Please enter a valid month!!\n";

//alert("Please enter a valid month")
//return false
}
if (strYear.length != 4 || year==0 || year<minYear || year>maxYear)
{
msg+="Please enter a valid year!!\n";

//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)
{
msg+="Please enter a valid date!!\n";

//alert("Please enter a valid date")
//return false
}
return msg;
   }