Disable submit functionality for all forms on a HTML page

Use this:

<form id="myform" name="myform" onSubmit="search();return false;" action="">

You should be able to do:

$('form').submit(false);

From the jQuery documentation:

In jQuery 1.4.3 you can now pass in false in place of an event handler. This will bind an event handler equivalent to: function(){ return false; }. This function can be removed at a later time by calling: .unbind( eventName, false ).