jQuery Tables plugin. Below is the code that triggers the update ajax source via your own custom event handler, possibly passing http paramaters.

gistfile1.js

//This is the extension function for table plugin (My params are array of key value pairs). Make this script available to your //web page which is utilizing the table plugin

$.fn.dataTableExt.oApi.fnReloadAjax = function (oSettings, sNewSource, myParams ) {
if ( oSettings.oFeatures.bServerSide ) {
    oSettings.aoServerParams = [];
    oSettings.aoServerParams.push({"sName": "user",
        "fn": function (aoData) {
            for (var i=0;i<myParams.length;i++){
            aoData.push( {"name" : myParams[i][0], "value" : myParams[i][1]});
         }
     }});
     this.fnClearTable(oSettings);
     this.fnDraw();
     return;
    }
};


//Example usage to put in you refresh event listener

var oTable;
if (oTable == null) {
    oTable = $(".items").dataTable(); //code for your data table
}else{
    oTable.fnReloadAjax(oTable.oSettings, supplier, val);
}