I find this

function admin_js() { ?>
    <script type="text/javascript">

    jQuery(document).ready( function () { 
        jQuery(\'form#post\').find(\'.categorychecklist input\').each(function() {
            var new_input = jQuery(\'<input type="radio" />\'),
            attrLen = this.attributes.length;

            for (i = 0; i < attrLen; i++) {
                if (this.attributes[i].name != \'type\') {
                    new_input.attr(this.attributes[i].name.toLowerCase(), this.attributes[i].value);
                }
            }

            jQuery(this).replaceWith(new_input);
        });
    });

</script>
<?php }
add_action(\'admin_head\', \'admin_js\');