This option enables you to add custom logic to be executed when the contents is extracted/saved. This custom logic can then modify the contents before it's submited to a serverside page. This can be useful if you want to do your own regexp cleanups and so forth. The format of this function is: saveContent(element_id, html, body). Where element id is the form element/div id of the editor and HTML is the HTML contents after the build in cleanup process has executed. This function should return the new HTML contents.
Example of usage of the save_callback option:
function myCustomSaveContent(element_id, html, body) { // Do some custom HTML cleanup html = html.replace(/a/g,'b'); return html; } tinyMCE.init({ ... save_callback : "myCustomSaveContent" });