In Prototype, this Ajax call posts its form to the server as a URL encoded string of name-value pairs, as you would find in a HTTP GET request:
function doajax()
{
var current_req = new Ajax.Request('/doajax', {
asynchronous:true,
evalScripts:true,
parameters: $('ajax_form').serialize(true)}
);
}
How would you do the same thing using jQuery?