function convertWord(type, content) {
	switch (type) {
		// Gets executed before the built in logic performes it's cleanups
		case "before":
			content = content.toLowerCase(); // Some dummy logic
			break;

		// Gets executed after the built in logic performes it's cleanups
		case "after":
			content = content.toLowerCase(); // Some dummy logic
			break;
	}

	return content;
}
<!-- TinyMCE -->
	tinyMCE.init({
		mode : "textareas",
		theme : "advanced",
	plugins : "print,advimage,media,advlink,paste,searchreplace",
	theme_advanced_buttons1 : "bold,italic,underline,separator,justifyleft,justifycenter,justifyright,justifyfull,bullist,numlist,undo,redo,image,media,link,unlink,separator,pastetext,pasteword",
	theme_advanced_buttons2 : "separator,search,print,cleanup,code",
	theme_advanced_buttons3 : "",
		theme_advanced_toolbar_location : "top",
		theme_advanced_toolbar_align : "left",
		theme_advanced_statusbar_location : "bottom",
		plugin_insertdate_dateFormat : "%Y-%m-%d",
		plugin_insertdate_timeFormat : "%H:%M:%S",
		extended_valid_elements : "hr[class|width|size|noshade],a[class|href|target|title],span[class|id],object[type|width|height|data],param[name|value]",
		file_browser_callback : "fileBrowserCallBack",
		paste_use_dialog : false,
		theme_advanced_resizing : true,
		theme_advanced_resize_horizontal : false,
		theme_advanced_link_targets : "",
		apply_source_formatting : true,
		tab_focus : ':prev,:next'
	});

	function fileBrowserCallBack(field_name, url, type, win) {
		var connector = "../../filemanager/browser.html?Connector=connectors/php/connector.php";
		var enableAutoTypeSelection = true;
		
		var cType;
		tinyfck_field = field_name;
		tinyfck = win;
		
		switch (type) {
			case "image":
				cType = "Image";
				break;
			case "media":
				cType = "Media";
				break;
			case "file":
				cType = "File";
				break;
		}
		
		if (enableAutoTypeSelection && cType) {
			connector += "&Type=" + cType;
		}
		
		window.open(connector, "tinyfck", "modal,width=600,height=400");
	}