function Check()
{
doOnOff(‘off’);
var dtStart = document.getElementById(‘<%=txtStartDate.ClientID%>’).value;
var dtEnd = document.getElementById(‘<%=txtEndDate.ClientID%>’).value;
var pos1=dtStart.indexOf(dtCh)
var strDay1=dtStart.substring(pos1)
var pos2=dtEnd.indexOf(dtCh)
var strDay2=dtEnd.substring(pos2)
if(pos1>2)
{
alert(“The date format should be : mm/dd/yyyy”);
return false;
}
else if (strDay1.length>8 )
{
alert(“The date format should be : mm/dd/yyyy”);
return false;
}
else if(pos2>2 )
{
alert(“The date format should be : mm/dd/yyyy”);
return false;
}
else if (strDay2.length>8 )
{
alert(“The date format should be : mm/dd/yyyy”);
return false;
}
else if (dtEnd.length>10)
{
alert(“The date format should be : mm/dd/yyyy”);
return false;
}
else if (isDate(dtStart)==false)
{
document.getElementById(‘<%=txtStartDate.ClientID%>’).focus();
return false;
}
else if (isDate(dtEnd)==false)
{
document.getElementById(‘<%=txtEndDate.ClientID%>’).focus();
return false;
}
else
{
//check bigger
if(Date.parse(dtStart)>0 && Date.parse(dtEnd)>0)
{
if (Date.parse(dtStart) > Date.parse(dtEnd))
{
alert(‘<%=ShellUtility.GetMessageDetails(“1028″)%>’);
return false;
}
else
{
var diff_date = Date.parse(dtEnd) – Date.parse(dtStart);
if(diff_date > 2592000000)
{
alert(‘<%=ShellUtility.GetMessageDetails(“1027″)%>’);
return false;
}
else
{
return true;
}
}
}
else
{
alert(‘<%=ShellUtility.GetMessageDetails(“5027″)%>’);
return false;
}
}
}
//This Part is to check Date formattings
var dtCh= “/”;
// var constMinYear = 1900;
// var constMaxYear = 2020;
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<constMinYear || year>constMaxYear){
alert(“Please enter a valid 4 digit year between “+constMinYear+” and “+constMaxYear);
return false;
}
if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
alert(“Please enter a valid date”);
return false;
}
return true;
}
