[jQuery] selecting multiple selects

[dezok714]

I am writing a sortby function that uses two "select"s on the page and
digs out the option val and submits the page for a new view. You can
see the sortby on this page:

http://www.beachhouse.com/vacation/search.asp?Country=United+States&State=California&City=Newport+Beach

at the top and bottom. I figured I could set a class for both the
selects as class="sortby", and do  singel $(.sortby).change(function()
BUT that did not seem to work so I created two unique ids for the
selects, id="sortBy1" and id="sortBy2". Which works.

Just wondering if I could optimize and collape these:



<jcode>

   $('#sortBy1').change(function(){
        var str = "";

        str = "&order=" + $("#sortBy1 option:selected").val();

        window.location = "http://www.beachhouse.com/vacation/search6.asp?
s=1" + str;

   });
   $('#sortBy2').change(function(){
        var str = "";

        str = "&order=" + $("#sortBy2 option:selected").val();

        window.location = "http://www.beachhouse.com/vacation/search6.asp?
s=1" + str;

   });

<htmlcode>

<select class=""sortby"" id=""sortBy1""> ... </select>
<select class=""sortby"" id=""sortBy2""> ... </select>