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Days Before Next Christmas Xmas



<!-- 
     Example File From "JavaScript and DHTML Cookbook"
     Published by O'Reilly & Associates
     Copyright 2003 Danny Goodman
-->
 
function getDaysBeforeNextXmas() {
    var oneMinute = 60 * 1000;
    var oneHour = oneMinute * 60;
    var oneDay = oneHour * 24;
    var today = new Date();
    var nextXmas = new Date();
    nextXmas.setMonth(11);
    nextXmas.setDate(25);
    if (today.getMonth() == 11 && today.getDate() > 25) {
        nextXmas.setFullYear(nextXmas.getFullYear() + 1);
    }
    var diff = nextXmas.getTime() - today.getTime();
    diff = Math.floor(diff/oneDay);
    return diff;
}

...

<p>Only 
<script type="text/javascript">document.write(getDaysBeforeNextXmas())</script>
shopping days until Christmas.</p>