How do I set the focus to the first input element in an HTML form independent from the id?

Question

Is there a simple way to set the focus (input cursor) of a web page on the first input element (textbox, dropdownlist, ...) on loading the

Answer 1

The most comprehensive jQuery expression I found working is (through the help of over here)

$(document).ready(function() {
    $('input:visible:enabled:first').focus();
});