[Plugin: WP-Table Reloaded] column filtering using select menus

Fantastic plug-in. I’m just having trouble wrapping my head around how to implement custom js. I would like to include the following functionality:

‘(function($) {
/*
* Function: fnGetColumnData
* Purpose: Return an array of table values from a particular column.
* Returns: array string: 1d data array
* Inputs: object:oSettings – dataTable settings object. This is always the last argument past to the function
* int:iColumn – the id of the column to extract the data from
* bool:bUnique – optional – if set to false duplicated values are not filtered out
* bool:bFiltered – optional – if set to false all the table data is used (not only the filtered)
* bool:bIgnoreEmpty – optional – if set to false empty values are not filtered from the result array
* Author: Benedikt Forchhammer <b.forchhammer /AT\ mind2.de>
*/
$.fn.dataTableExt.oApi.fnGetColumnData = function ( oSettings, iColumn, bUnique, bFiltered, bIgnoreEmpty ) {
// check that we have a column id
if ( typeof iColumn == “undefined” ) return new Array();

// by default we only wany unique data
if ( typeof bUnique == “undefined” ) bUnique = true;

// by default we do want to only look at filtered data
if ( typeof bFiltered == “undefined” ) bFiltered = true;

// by default we do not wany to include empty values
if ( typeof bIgnoreEmpty == “undefined” ) bIgnoreEmpty = true;

// list of rows which we’re going to loop through
var aiRows;

// use only filtered rows
if (bFiltered == true) aiRows = oSettings.aiDisplay;
// use all rows
else aiRows = oSettings.aiDisplayMaster; // all row numbers

// set up data array
var asResultData = new Array();

for (var i=0,c=aiRows.length; i<c; i++) {
iRow = aiRows[i];
var aData = this.fnGetData(iRow);
var sValue = aData[iColumn];

// ignore empty values?
if (bIgnoreEmpty == true && sValue.length == 0) continue;

// ignore unique values?
else if (bUnique == true && jQuery.inArray(sValue, asResultData) > -1) continue;

// else push the value onto the result data array
else asResultData.push(sValue);
}

return asResultData;
}}(jQuery));

function fnCreateSelect( aData )
{
var r='<select><option value=””></option>’, i, iLen=aData.length;
for ( i=0 ; i<iLen ; i++ )
{
r += ‘<option value=”‘+aData[i]+'”>’+aData[i]+'</option>’;
}
return r+'</select>’;
}

$(document).ready(function() {
/* Initialise the DataTable */
var oTable = $(‘#example’).dataTable( {
“oLanguage”: {
“sSearch”: “Search all columns:”
}
} );

/* Add a select menu for each TH element in the table footer */
$(“tfoot th”).each( function ( i ) {
this.innerHTML = fnCreateSelect( oTable.fnGetColumnData(i) );
$(‘select’, this).change( function () {
oTable.fnFilter( $(this).val(), i );
} );
} );
} );’

http://www.datatables.net/examples/api/multi_filter_select.html

Thanks in advance for any help you can give.