Using Spry.Data.XMLDataSet. Can xml file name be set to change on calendar date?

Question

I have a website that uses Spry Data XML DataSet to list common pests for the current month. http://www.shspestcontrol.com/
Each month's list of pests is in a separate xml file (e.g. pests-august.xml)
Rather than manually updating the file name each month, can it be setup to automatically change the name
For instance on January 1st, file name changes to pests-january.xml, Feb 1st changes to pests-february.xml. etc.
<script type="text/javascript">
<!--
var dsPests1 = new Spry.Data.XMLDataSet("xml_files/pests-august.xml", "gallery/pests/pest");
//-->
</script>
Any advice if this can be done and if so how to go about doing it would be much appreciated
Thanks, Toni

Answer 1

<script>
var dsPests1 = new Spry.Data.XMLDataSet("pests-september.xml", "gallery/pests/pest");
function setPestsFile(){
    var months = new Array(13);
        months[0]  = "january";
        months[1]  = "february";
        months[2]  = "march";
        months[3]  = "april";
        months[4]  = "may";
        months[5]  = "june";
        months[6]  = "july";
        months[7]  = "august";
        months[8]  = "september";
        months[9]  = "october";
        months[10] = "november";
        months[11] = "december";
    var now = new Date();
    var monthnumber = now.getMonth();
    var monthname = months[monthnumber];
    dsPests1.setURL("pests-"+monthname+".xml");
    dsPests1.loadData();
window.onload = setPestsFile();
</script>