My solution from: http://groups.google.com/group/jquery-ui/browse_thread/thread/35a33d1c50f0e724/e527c8f47ba183e0?lnk=gst&q=extend+center#
and in action at www.deft.co.nz $(document).ready(function() { jQuery.fn.centerScreen = function(loaded) { var obj = this; if(!loaded) { obj.css('top', $(window).height()/2- this.height()/2); obj.css('left', $(window).width()/2- this.width()/2); $(window).resize(function() { obj.centerScreen(!loaded); }); } else { obj.stop(); obj.animate({ top: $(window).height()/2- this.height()/2, left: $ (window).width()/2-this.width()/2}, 200, 'linear'); } } }); Now you can apply centreScreen to divs that have layout [eg $ ('#page').centreScreen()]. On document.ready it will centre the element, then on window.resize it will move (linear animation) the div to the new centre. Seems to work nicely in IE7 and FF2. There are a few potential bigs - it should really check for layout, and apply it if it is missing for example - but it works well enough. When implenting, you'd do the usual MS hacks, then let this take over. Other possible extensions: maybe an option to centre to parent element as well as window, un-centre, offsets etc. On Mar 6, 11:31 am, TheOriginalH <[EMAIL PROTECTED]> wrote: > Hi, very new to jQuery, but suspect it can probably help me out. > > I have a div of a fixed height (auto scroll where content exceeds that > height), that I would like to center vertically on the page. I'm > assuming I can use jQuery to work out the height of the browser > window, subtract the height of the div and then apply margin-top and > margin-bottom at 50% of that result to achieve what I'm after - but am > very lost as to the syntax involved. > > Any help gratefully received! > > TIA