js dynamically create html elements_javascript skills

<meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <title> js learning to dynamically create html elements </title> <style><!-- body{margin:0;padding:0;} .sky{background:#000;width:1000;height:500px; position:relative;} #s{ background:#FFF; width:1px; height:1px; overflow:hidden; position:absolute;} --></style> <style bogus="1">body{margin:0;padding:0;} .sky{background:#000;width:1000;height:500px; position:relative;} #s{ background:#FFF; width:1px; height:1px; overflow:hidden; position:absolute;}</style> <div class="sky" id="sky"></div> <button id="creatstar" onclick="creatstars()">Make stars for fun</button>