Try $('#wrapper').height() Also please note the difference in your ID's. With the jQuery code you're referencing 'wrapper' and with the DOM methods you're referencing 'Wrapper'.
Cheers, -Jonathan On 1/9/08, nightelf <[EMAIL PROTECTED]> wrote: > > > in firefox > $('#wrapper').attr('offsetHeight') == undefined > but > document.getElementById('Wrapper').offsetHeight > is ok >