var linkz_location = "http://static.linkz.net/linkz/";

function linkz_include(script_filename) {
    document.write('<' + 'script');
    document.write(' language="javascript"');
    document.write(' type="text/javascript"');
    document.write(' src="' + linkz_location + script_filename + '">');
    document.write('</' + 'script' + '>');
}

var r = Math.random();
if ( r < 0.5 )
{
    linkz_include("linkz.V2.js");
}
else
{
    linkz_include("linkz.V3.js");
}