<div id="SearchList">
<a href="www.google.com/up">up</a>
<a href="www.google.com/down">down</a>
<a href="www.google.com/left">left</a>
<a href="www.google.com/right">right</a>
</div>

<div id="SearchList">
<a href="www.bing.com/up">up</a>
<a href="www.bing.com/down">down</a>
<a href="www.bing.com/left">left</a>
<a href="www.bing.com/right">right</a>
</div>

// For each anchor element...
$("#SearchList a").each(function() {

    // Change its 'href' attribute to...
    $(this).attr("href",

        // Its current 'href' attribute with a .replace() called
        $(this).attr("href").replace("google", "bing"));
});