<!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>无标题文档</title>
<script type="text/javascript">
function connectionDigital(control)
{
var txt = document.getElementById('txtScream');
}
</script>
</head>
<body>
<table width="138" border="1">
<tr width="200">
<td height="30" colspan="4"><input type="text" name="txtScream" id="txtScream" style="130px; height:25px;border-style:none; text-align:right;" readonly="readonly" /></td>
</tr>
<tr>
<td width="24"><input name="1" type="button" id="1" value ="1" onclick="connectionDigital(this)"/></td>
<td width="30"><input name="2" type="button" id="2" value ="2" onclick="connectionDigital(this)"/></td>
<td width="31"><input name="3" type="button" id="3" value ="3" onclick="connectionDigital(this)"/></td>
<td width="25"><input name="+" type="button" id="+" value ="+" onclick="connectionDigital(this)"/></td>
</tr>
<tr>
<td><input name="4" type="button" id="4" value ="4" onclick="connectionDigital(this)"/></td>
<td><input name="5" type="button" id="5" value ="5" onclick="connectionDigital(this)"/></td>
<td><input name="6" type="submit" id="6" value ="6" onclick="connectionDigital(this)"/></td>
<td><input name="-" type="button" id="-" value ="-" onclick="connectionDigital(this)"/></td>
</tr>
<tr>
<td><input name="7" type="button" id="7" value ="7" onclick="connectionDigital(this)"/></td>
<td><input name="8" type="button" id="8" value ="8" onclick="connectionDigital(this)"/></td>
<td><input name="9" type="button" id="9" value ="9" onclick="connectionDigital(this)"/></td>
<td><input name="*" type="button" id="*" value ="*" /></td>
</tr>
<tr>
<td><input name="0" type="button" id="0" value ="0" onclick="connectionDigital(this)"/></td>
<td colspan="2"><input name="=" type="button" id="=" value ="=" /></td>
<td><input name="/" type="button" id="/" value ="/" /></td>
</tr>
</table>
<p> </p>
</body>
</html>