document.getElementById('perfect_placement_work').onchange = function() {
    if (this.value == 'Work Experience') {
        var new_tr = document.createElement('tr');
        new_tr.id = 'work_experience_select';
        var new_td = document.createElement('td');
        new_tr.appendChild(new_td);
        var new_td = document.createElement('td');
        new_tr.appendChild(new_td);
        var new_select = document.createElement('select');
        new_select.name = 'perfect_placement_work_experience';
        var options = ['Teaching', 'Medicine & Healthcare', 'Journalism', 'Veterinary Medicine', 'Business', 'Law'];
        for (var i = 0; i < options.length; i++) {
            var new_option = document.createElement('option');
            new_option.value = options[i];
            new_select.appendChild(new_option);
            var new_text = document.createTextNode(options[i]);
            new_option.appendChild(new_text);
        }
        new_td.appendChild(new_select);
        new_select.value = work_experience_val;
        this.parentNode.parentNode.parentNode.insertBefore(new_tr, this.parentNode.parentNode.nextSibling);
    } else {
        if (document.getElementById('work_experience_select')) {
            document.getElementById('work_experience_select').parentNode.removeChild(document.getElementById('work_experience_select'));
        }
    }
}

document.getElementById('perfect_placement_work').onchange();