[jQuery] ajax :: how to load script

[dirk w]

hello community,
i've got a textfield and a searchbutton.
a click on the searchbutton schould execute the following java script
which will return some data to a callbackfunction called
"showmyvideos":

$('#searchButton').click(function()
{
        var url = 'http://gdata.youtube.com/feeds/api/videos?q=' +
        $('#searchText').val() +
        '&alt=json-in-script&callback=showMyVideos&max-results=7&format=5';

        // ajax functions to call $.ajax, $.load, $.get, $.post
        EXECUTE('<script type="text/javascript" src="' + url + '"></
script>');
});

my problem is: how do i execute this java script line to get the data.
this loading must happen without reloading the whole page.

is this possible with jquerys ajax plugin?

thanks a lot in advance!
dirk