JQuery - is a date between to other dates?

JQuery - is a date between to other dates? ~ Andrew Pougher

HTML

<h2>Check if date is between two dates</h2>
Enter  first Date(dd/mm/yyyy):
<input type="text" name="fDate" id="fDate" value='21-07-2011'/><br/>
Enter  second Date(dd/mm/yyyy):
<input type="text" name="lDate" id="lDate" value='21-07-2012'/><br/>
Enter  date you want to check(dd/mm/yyyy):
<input type="text" name="cDate" id="cDate" value='Thursday, July 12, 2012'/>
<input type="submit" value="Check" onclick="dateCheck();" />

CSS

input{padding:3px;display:block;width:200px}

JavaScript

function dateCheck() {

    var d = new Date();

    var fDate,lDate,cDate;
    fDate = $.datepicker.parseDate('dd-mm-yy', $('#fDate').val());   
    lDate = $.d.parseDate('dd-mm-yy', $('#lDate').val());
    cDate =  $.datepicker.parseDate("DD, MM d, yy", $('#cDate').val());

    if((cDate <= lDate && cDate >= fDate)) {
        alert("true");
        return true;
    }
    alert("false");
    return false;
}