Customize WordPress TinyMCE Configuration

wptinymcecustomconfig

/*****************************************************************************************
* Customize TinyMCE Configuration
*******************************************************************************************/

// http://tinymce.moxiecode.com/wiki.php/Configuration
function nhcc_tinymce_config( $init ) {

// Change code cleanup/content filtering config
	
	// Don't remove line breaks
	$init['remove_linebreaks'] = false; 
	// Convert newline characters to BR tags
	//$init['convert_newlines_to_brs'] = true; 
	// Preserve tab/space whitespace
	$init['preformatted'] = true; 
	// Add to list of formats to remove with Remove Format button
	$init['removeformat_selector'] = 'b,strong,em,i,span,ins,del,h1,h2,h3,h4,h5,h6,pre';
	// Do not remove redundant BR tags
	$init['remove_redundant_brs'] = false;
	
// Add to list of valid HTML elements (so they don't get stripped)

	// IFRAME
	$valid_iframe = 'iframe[id|class|title|style|align|frameborder|height|longdesc|marginheight|marginwidth|name|scrolling|src|width]';
	// PRE
	$valid_pre = 'pre[id|name|class|style]';
	// DIV
	$valid_div = 'div[align<center?justify?left?right|class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style|title]';

	// Concatenate 
	$cbnet_valid_elements = $valid_iframe . ',' . $valid_pre . ',' . $valid_div;

	// Add to extended_valid_elements if it alreay exists
	if ( isset( $init['extended_valid_elements'] ) ) {
		$init['extended_valid_elements'] .= ',' . $cbnet_valid_elements;
	} else {
		$init['extended_valid_elements'] = $ext;
	}

// Pass $init back to WordPress
	return $init;
}
add_filter('tiny_mce_before_init', 'nhcc_tinymce_config');