Style a certain character in a string

Question

I want to style a certain character in a string via jQuery, but have no clue how to approach that. I have the following situation

Answer 1

I replaced the "i" with a span dynamically:

var jq = $('a');
var text = jq.text().replace(jq.attr('accessKey'), 'i');
jq.html(text);

http://jsfiddle.net/FishBasketGordo/QGEzA/