patch for Safari + jQuery + tinyMCE ajax update using Form Plugin.js

beforeSubmit: function(data, target, options)
					{
						if ($('#use_rtf_editor').attr('checked'))
						{
							var editor_id=$("textarea[name='page_section[text]']",target).attr('id');
							var editor=tinyMCE.getInstanceById(editor_id);
							// bookmark data item
							page_section_data=null;
							$.each(data, function(i, val) {
								if (val['name']=="page_section[text]")
									page_section_data=val;
							})
							
							page_section_data['value']=editor.getContent();
							
						}
					}