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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Sample</title>
</head>
<body><input type=button onclick="div1.style.display='';">
<div id=div1 style="position:absolute;width:100px;height:100px;left:10px;display:none;;background:#EEE;" onmouseout="this.style.display='none'">a</div>
</body>
</html>
<div id=div1 style="position:absolute;width:100px;height:100px;left:10px;display:none;;background:#EEE;" onmouseout="this.style.display='none'">a</div>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Sample</title>
</head>
<body><input type=button onclick="div1.style.display='';">
<div id=div1 style="position:absolute;width:100px;height:100px;display:none;;background:#EEE;" onmouseout="this.style.display='none'">a</div>
</body>
</html>