Using jQuery to see if a drop down menu select has changed

EXAMPLE2

$("#dropdownID").live('change', function() {
    if ($(this).val() == 'selectionKey'){
        DoSomething();
    } else {
        DoSomethingElse();
    }
});


EXAMPLE2

if ($('#SEJob_ShipmentType').live('change', function() {
        alert($('#SEJob_ShipmentType option:selected').text());
        if ($('#SEJob_ShipmentType option:selected').text() == 'FCL') {
            $('#SEJob_PickUpDate').enabled = false;
        }
    }))