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<!DOCTYPE html> <html> <head> <script> function writeText(txt) { document.getElementById("desc").innerHTML = txt; } </script> </head> <body> <img src ="planets.gif" width ="145" height ="126" alt="Planets" usemap="#planetmap" /> <map name="planetmap"> <area shape ="rect" coords ="0,0,82,126" onmouseover="writeText('The Sun and the gas giant planets like Jupiter are by far the largest objects in our Solar System.')" href ="sun.htm" target ="_blank" alt="Sun" /> <area shape ="circle" coords ="90,58,3" onmouseover="writeText('The planet Mercury is very difficult to study from the Earth because it is always so close to the Sun.')" href ="mercur.htm" target ="_blank" alt="Mercury" /> <area shape ="circle" coords ="124,58,8" onmouseover="writeText('Until the 1960s, Venus was often considered a twin sister to the Earth because Venus is the nearest planet to us, and because the two planets seem to share many characteristics.')" href ="venus.htm" target ="_blank" alt="Venus" /> </map> <p id="desc">Mouse over the sun and the planets and see the different descriptions.</p> </body> </html>
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