Screen in KML

Put a image on screen. <ScreenOverlay>

Put a image on screen. Put the bottom-left corner of a image whose size is 20% of the screen, at the 5% away from the bottom-left corner of the screen.
```
<?xml version="1.0" encoding="UTF-8"?> 
<kml xmlns="http://earth.google.com/kml/2.0"> <Document>

<ScreenOverlay> 
 <Icon><href> ball.png </href></Icon>
 <overlayXY x="0" y="0" xunits="fraction" yunits="fraction"/>
 <screenXY x="0.05" y="0.05" xunits="fraction" yunits="fraction"/>
 <size x="0.20" y="0.20" xunits="fraction" yunits="fraction"/>
</ScreenOverlay>

</Document> </kml>
```
Save
"ball.png" in the same folder with the above kml file.
Image file can be a file on WWW, such as "http://www...../ball.png" .
To make one file with image files and kml file, combine the kml file and image files with "zip" command, and set the extension ".kmz", such as "test.kmz".

Make the image half-transparent. <color>

<?xml version="1.0" encoding="UTF-8"?> 
<kml xmlns="http://earth.google.com/kml/2.0"> <Document>

<ScreenOverlay> 
 <Icon><href> ball.png </href></Icon>
 <overlayXY x="0" y="0" xunits="fraction" yunits="fraction"/>
 <screenXY x="0.05" y="0.05" xunits="fraction" yunits="fraction"/>
 <size x="0.20" y="0.20" xunits="fraction" yunits="fraction"/>
 <color>55ffffff</color>
</ScreenOverlay>

</Document> </kml>

As the example of "LineString", the first two digit of color specify the taransparency, 00-ff.

<name>, <TimeSpan>, <description>, <BalloonStyle> are same as "Point" example.

<?xml version="1.0" encoding="UTF-8"?> 
<kml xmlns="http://earth.google.com/kml/2.0"> <Document>

<ScreenOverlay> 
 <Icon><href> ball.png </href></Icon>
 <overlayXY x="0" y="0" xunits="fraction" yunits="fraction"/>
 <screenXY x="0.05" y="0.05" xunits="fraction" yunits="fraction"/>
 <size x="0.20" y="0.20" xunits="fraction" yunits="fraction"/>
 <color>55ffffff</color>
 <TimeSpan> 
  <begin>2010-12-20T03:00:00Z</begin>
  <end>2010-12-21T02:59:59Z</end>
 </TimeSpan>
 <name> New image</name>
 <description>This is a new image.</description>
 
 <Style>  
  <BalloonStyle>
  <bgColor>00664422</bgColor> <textColor>fffffff</textColor>
  <text><![CDATA[ $[name] <HR> $[description] <BR>  
   <A HREF="http://www-step.kugi.kyoto-u.ac.jp/">SPEL Home page</A>
  ]]> </text>
 </BalloonStyle>
 </Style>
</ScreenOverlay>

</Document> </kml>

Time in Universal Time (UT) can be set by "YYYY-MM-DDTHH:MM:SSZ".
Start and end time are set by " <begin>" and "<end>”, respectively.