Javascript - Changing border-width without moving surrounding elements.

Answer 1

When I do this and I want that same +border -movement result, I like to do this:

function() { 
    $(this).css('borderWidth', '7px');
    $(this).css('margin', '-7px');
});

The negative margin brings everything back in.

You can also condense the styles into an object and pass them in one .css() call:

$(this).css( {borderWidth: '7px', margin: '-7px'} );