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function digg_protect($content) {	include("htmlparser.inc");																			// Include the class	$parser = new HtmlParser($content);																	// Create the parser	while($parser->parse()) {																			// Start parsing the content		if ($parser->iNodeName = "img") {																// If this node is an image			if ($parser->iNodeAttributes["src"] && $parser->iNodeAttributes["protect"]) {				// If the "protect" and "src" attributes are both declared				if (strstr($_SERVER["HTTP_REFERRER"], "digg.com")) {									// If our viewer is visiting from Digg					$alt = "";					$width = "";					$height = "";					if ($parser->iNodeAttributes["alt"]) {						$alt = " alt=\"" . $parser->iNodeAttributes["alt"] . "\"";					}					if ($parser->iNodeAttributes["width"]) {						$width = " width=\"" . $parser->iNodeAttributes["width"] . "\"";					}					if ($parser->iNodeAttributes["height"]) {						$height = " height=\"" . $parser->iNodeAttributes["height"] . "\"";					}					$tag = "<img src=\"" . $parser->iNodeAttributes["protect"] . "\"" . $alt . $width . $height . " />";					$new = preg_replace("/protect=(.*?)/i", "", $parser->iNodeValue);					$new = preg_replace("/src=(.*?)/i", $parser->iNodeAttributes["protect"], $new);					str_ireplace($parser->iNodeValue, $new, $content);									// Replace the old tag with the new one				} else {																				// If our viewer isn't visiting from Digg					$alt = "";					$width = "";					$height = "";					if ($parser->iNodeAttributes["alt"]) {						$alt = " alt=\"" . $parser->iNodeAttributes["alt"] . "\"";					}					if ($parser->iNodeAttributes["width"]) {						$width = " width=\"" . $parser->iNodeAttributes["width"] . "\"";					}					if ($parser->iNodeAttributes["height"]) {						$height = " height=\"" . $parser->iNodeAttributes["height"] . "\"";					}					$tag = "<img src=\"" . $parser->iNodeAttributes["src"] . "\"" . $alt . $width . $height . " />";					str_ireplace($parser->iNodeValue, $new, $content);									// Replace the old tag with the new one				}			}		}	}	return $content;}add_filter("the_content", "digg_protect");