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/output_xhtml.css',
		coreStyles_bold	: { element : 'span', attributes : {'class': 'Bold'} },
		coreStyles_italic : { element : 'span', attributes : {'class': 'Italic'} },
		// More definitions follow.
	});