var fileTypes = new Array( 'pdf', 'doc' );
var hostname = "www.microstarlight.com";

$(document).ready( function(){

    var requestURL = window.location.href;
    var requestURI = requestURL.replace( "http://" + hostname, "" );
    var pattern = "(" + fileTypes.join( "|" ) +")";

    $('a').each( function(){

        var urlSplit = $(this).attr( 'href' ).split( "\." );
        var fileExt = urlSplit.pop();

        if ( fileExt.match( pattern ) ){
            $(this).attr( 'onClick', "javascript: pageTracker._trackPageview('" + requestURI + "');" );
        }
    });
});