Resize event does not fire in Firefox, but I need to handle focus when FancyBox is shown

I am working on a solution where I need to have the first input field selected when a fancybox is shown. I have tried reacting to the resize event, which works fine in IE but not in Firefox. Also tried reacting to th开发者_如何学运维e click event on the link that opens the box - but aparently this is too early so some other element steals focus afterwards. Any ideas??

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use the onComplete callback:

$("#whatever").fancybox({
    onComplete: function() {
        $('#someTextBox').focus();
    }
});