Are there any alternatives to using eval to immediatly run remote & trusted javascript code.

function load(filePath) {
    var o = $.ajax({
        url: filePath,
        dataType: 'html',
        async: false 
    }); 

    eval(o.responseText);
}

load("somePath");
// run a function that relies on the code from o.responseText being loaded
doSomethingWithCode();

I'm aware that synchronous loading of javascript is adviced againts. But if there is no choice are there any cross browser alternatives for the use of eval above.

[Edit]

To clarify in more detail the code being loaded is a self executing function. Which needs to execute before doSomethingWidthCode. It's also being loaded from the server on the same domain hence its trusted.