<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
<script type="text/javascript">
function checkdate(input)
{
var validformat=/^\d{2}\/\d{2}\/\d{4}$/
var returnval=false
if (!validformat.test(input.value))
alert("Please enter valid date")
else
{ //Detailed check for valid date ranges
var monthfield=input.value.split("/")[0]
var dayfield=input.value.split("/")[1]
var yearfield=input.value.split("/")[2]
var dayobj = new Date(yearfield, monthfield-1, dayfield)
if ((dayobj.getMonth()+1!=monthfield)||(dayobj.getDate()!=dayfield)||(dayobj.getFullYear()!=yearfield))
alert("Invalid Day, Month, or Year range detected. Please correct and submit again.")
else
returnval=true
}
if (returnval==false) input.select()
return returnval
}
</script>
</head>
<body>
<form onSubmit="return checkdate(this.mydate)">
<input type="text" name="mydate" />
<b>Date Format:</b> mm/dd/yyyy<br />
<input type="submit" value="submit" />
</form>
</body>
</html>
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