Jquery - turning autocomplete to off for all forms

You could bind a live event to the focus event and then change the attribute on that.

$(document).ready(function(){
    $(':input').live('focus',function(){
        $(this).attr('autocomplete', 'off');
    });
});

As of jQuery 1.7 jQuery.live was deprecated. This code would now look like:

$(document).ready(function(){
    $( document ).on( 'focus', ':input', function(){
        $( this ).attr( 'autocomplete', 'off' );
    });
});