What jQuery method do I put here if I want it to be triggered right when the page is loaded?

Question

What do I replace the question marks with if I want the class to be added when the page is loaded?

$("form#signupform input#email").live("????", function() {
    $(this).addClass("launchrock");
});

Answer 1

You'd replace more than that.

$(window).load(function() {
    $("form#signupform input#email").addClass("launchrock");
});

Assuming by page you mean page with all assets; if not, use $(function() { ... }) which only waits for the DOM API to be ready for use.