Jquery how to get top leftcorner of page?
<p>I would like to mask a asp page by a div, this one have to completly cover the page.</p>

<p>I can get the size of page and resize the div with this values:</p>

<pre><code> var maskHeight = $(document).height();
        var maskWidth = $(window).width();


        //Set height and width to mask to fill up the whole screen  
        $('#mask').css({ 'width': maskWidth, 'height': maskHeight });
</code></pre>

<p>It is ok bue the mask is contained in a div in the page.. So the mask set his position from the top left of.. the div!
How can I set the position to the top left of the whole page? thanks a lot for any ideas..</p>
