<map id="ISAPI_HttpRequest" name="ISAPI_HttpRequest"> <area shape="rect" id="node2" href="$class_http_request.html" title="HttpRequest" alt="" coords="26,83,120,111"/> <area shape="rect" id="node4" href="$class_http_message.html" title="HttpMessage" alt="" coords="23,6,123,34"/> </map>