LG 42PM4700 Owner's Manual page 176

✎ Internet supports up to Flash 10 but does not support platform-dependent
technology like ActiveX.
✎ Internet only works with pre-installed plug-ins.
✎ Internet only replays the following media file formats:
JPEG / PNG / GIF / WMV (ASF) / WMA / MP3 / MP4
✎ Internet is forcibly closed when memory is insufficient.
✎ For the Internet, fonts installed on the TV are used and may not be displayed
normally depending on the content played.
✎ Internet does not support file and font download.
✎ Internet is made for TV so it may function differently from PC browsers.
✎ Internet is a TV browser and may not work properly when playing some
content files.