uploadify send button id
===

I would like to have multiple uploadify buttons and be able to tell what file input was clicked.  Is there a way to get the id of the button that was clicked or some other way to identify the file?
For example I would like to know that the first input with ID "job_1237_1" was clicked if I have inputs:

        <input class="file_selector" type="file" name="file_upload" id="job_1237_1" /><br />
        <input class="file_selector" type="file" name="file_upload" id="job_1237_2" />

with JS:

    $('.file_selector').uploadify({
    // options...
    });

Is this possible?