public/javascripts/yui/datatable/datatable.js
function(el, oRecord, oColumn, oData) {
        var bChecked = oData;
        bChecked = (bChecked) ? " checked=\"checked\"" : "";
        el.innerHTML = "<input type=\"checkbox\"" + bChecked +
                " class=\"" + DT.CLASS_CHECKBOX + "\" />";
    }
function(el, oRecord, oColumn, oData) {
        var bChecked = oData;
        bChecked = (bChecked) ? " checked=\"checked\"" : "";
        el.innerHTML = "<input type=\"checkbox\"" + bChecked +
                " class=\"" + DT.CLASS_CHECKBOX + "\" />";
    }
function ( el , oRecord , oColumn , oData ) { var bChecked = oData ; bChecked = ( bChecked ) ? " checked=\"checked\"" : "" ; el . innerHTML = "<input type=\"checkbox\"" + bChecked + " class=\"" + DT . CLASS_CHECKBOX + "\" />" ; }
Formats a CHECKBOX element.

@method DataTable.formatCheckbox
@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 | Boolean} Data value for the cell. Can be a simple
Boolean to indicate whether checkbox is checked or not. Can be object literal
{checked:bBoolean, label:sLabel}. Other forms of oData require a custom
formatter.
@static
Formats a CHECKBOX element .