[thelist] JavaScript Question

[Ran Mano]

I'm developing a web site with a modal window that launches on page load.  (It's not my idea, it's the client's. Can't say I'm a big fan, but they are very adamant on this matter.)  I've tried a few different libraries and am now using a JQuery one that looks and works great. 


One problem -- the client wants for the modal window to close after X seconds (or should I say XXXX miliseconds).  How would I go about this? Below is the relevant code.  I'm sure this one requires one or two lines of code, but I am at a loss. JavaScript has never been a strong suite.

Thanks!
RM
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.1/jquery.min.js"></script>



<script type="text/javascript">
$(document).ready(function(){



    $.fn.popOpen = function(){
        
        popID = $(this).attr('rel'); //Get Popup Name
        popURL = $(this).attr('href'); //Get Popup href to define size
        
        //Pull Query & Variables from href URL
        query= popURL.split('?');
        dim= query[1].split('&');
        popWidth = dim[0].split('=')[1]; //Gets the first query string value
        
        
        //Fade in the Popup and add close button
        $('#' + popID).fadeIn().css({ 'width': Number( popWidth ) }).prepend('<a href="#" class="close"><img src="close_pop.png" class="btn_close" title="Close Window" alt="Close" /></a>');
        
        //Define margin for center alignment (vertical + horizontal) - we add 80 to the height/width to accomodate for the padding + border width defined in the css
        var popMargTop = ($('#' + popID).height() + 20) / 2;
        var popMargLeft = ($('#' + popID).width() + 20) / 2;
        
        //Apply Margin to Popup
        $('#' + popID).css({ 
            'margin-top' : -popMargTop,
            'margin-left' : -popMargLeft
        });
        
        //Fade in Background
        $('body').append('<div id="fade"></div>'); //Add the fade layer to bottom of the body tag.
        $('#fade').css({'filter' : 'alpha(opacity=80)'}).fadeIn(); //Fade in the fade layer 
        
    };

    //When you click on a link with class of poplight and the href starts with a # 
    $('a.poplight[href^=#]').click(function() {
        $(this).popOpen(); //Run popOpen function on click
        return false;
    });
    
    $('a.poplight[href=#?w=931]').popOpen(); //Run popOpen function once on load
    
    //Close Popups and Fade Layer
    $('a.close, #fade').live('click', function() { //When clicking on the close or fade layer...
          $('#fade , .popup_block').fadeOut(); //fade them both out
        $('#fade').remove();
        return false;
    });




    popOpen
    
});

</script>