Take a <select> object with a group of <options> that are sorted by a numeric value attribute and sort alphabetically by the text.

optionAlphaSort.js

$(document).ready(function () {

    var $selector = $('#selector'),
        $options = $selector.find('option'),
        sortedOptions = [], i;

    for(i = 0; i < $options.length; i += 1) {
        sortedOptions.push([$($options[i]).text(), i]);
    }

    sortedOptions.sort();

    for(i = 0; i < sortedOptions.length; i += 1) {
        var j = sortedOptions[i][1];
        if (i === 0) {
            $options[j].selected = true;
        }
        $selector.append($options[j]);
    }

});

selectObject.html

<!-- original -->
<select id="selector">
    <option val="1">Beta</option>
    <option val="2">Zed</option>
    <option val="4">Alpha</option>
</select>

<!-- results -->
<select id="selector">
    <option val="4">Alpha</option>
    <option val="1">Beta</option>
    <option val="2">Zed</option>
</select>