This sample shows how to configure CKEditor to output valid
			XHTML 1.1 code.
			Deprecated elements (<font>, <u>) or attributes
			(size, face) will be replaced with XHTML compliant code.
		
To add a CKEditor instance outputting valid XHTML code, load the editor using a standard JavaScript call and define CKEditor features to use the XHTML compliant elements and styles.
A snippet of the configuration code can be seen below; check the source of this page for full definition:
CKEDITOR.replace( 'textarea_id', {
	contentsCss: 'assets/outputxhtml.css',
	coreStyles_bold: {
		element: 'span',
		attributes: { 'class': 'Bold' }
	},
	coreStyles_italic: {
		element: 'span',
		attributes: { 'class': 'Italic' }
	},
	...
});