public/javascripts/yui/datatable/datatable.js
function(el, oRecord, oColumn, oData) {
        el.innerHTML = util.Number.format(oData, oColumn.numberOptions || this.get("numberOptions"));
    }
function(el, oRecord, oColumn, oData) {
        el.innerHTML = util.Number.format(oData, oColumn.numberOptions || this.get("numberOptions"));
    }
function ( el , oRecord , oColumn , oData ) { el . innerHTML = util . Number . format ( oData , oColumn . numberOptions || this . get ( "numberOptions" ) ) ; }
Formats numbers.

@method DataTable.formatNumber
@param el {HTMLElement} The element to format with markup.
@param oRecord {YAHOO.widget.Record} Record instance.
@param oColumn {YAHOO.widget.Column} Column instance.
@param oData {Object} Data value for the cell, or null.
@static
Formats numbers .