请高手指点,谢谢!!
<body>
<script language="vbscript">
sub a()
f1.t1.vaule=f1.t1.vaule & "1"
end sub
sub b()
f1.t1.vaule=f1.t1.vaule & "2"
end sub
sub c()
f1.t1.vaule=f1.t1.vaule & "3"
end sub
sub d()
f1.t1.vaule=f1.t1.vaule & "4"
end sub
sub e()
f1.t1.vaule=f1.t1.vaule & "5"
end sub
sub f()
f1.t1.vaule=f1.t1.vaule & "6"
end sub
sub g()
f1.t1.vaule=f1.t1.vaule & "7"
end sub
sub h()
f1.t1.vaule=f1.t1.vaule & "8"
end sub
sub i()
f1.t1.vaule=f1.t1.vaule & "9"
end sub
sub j()
f1.t1.vaule=f1.t1.vaule & "0"
end sub
sub k()
f1.t1.vaule=f1.t1.vaule & "+"
end sub
sub l()
f1.t1.vaule=f1.t1.vaule & "-"
end sub
sub m()
f1.t1.vaule=f1.t1.vaule & "*"
end sub
sub n()
f1.t1.vaule=f1.t1.vaule & "/"
end sub
sub cr()
f1.t1.value=""
end sub
sub compute()
f1.t1.value=eval"f1.t1.value"
end sub
</script>
<form name="f1">
<div align="center">
<table width="200" border="1" cellspacing="0" cellpadding="0">
<tr>
<td colspan="4" align="center">青蛙计算机</td>
</tr>
<tr>
<td colspan="4"><div align="center">
<input type="text" name="t1">
</div></td>
</tr>
<tr>
<td><div align="center">
<input type="button" value=" 1 " name="v1" onClick="sub a()">
</div></td>
<td><div align="center">
<input type="button" value=" 2 " name="v2" onClick="sub b()">
</div></td>
<td><div align="center">
<input type="button" value=" 3 " name="v3" onClick="sub c()">
</div></td>
<td><div align="center">
<input type="button" value=" + " name="plus" onClick="sub k()">
</div></td>
</tr>
<tr>
<td><div align="center">
<input type="button" value=" 4 " name="v4" onClick="sub d()">
</div></td>
<td><div align="center">
<input type="button" value=" 5 " name="v5" onClick="sub e()">
</div></td>
<td><div align="center">
<input type="button" value=" 6 " name="v6" onClick="sub f()">
</div></td>
<td><div align="center">
<input type="button" value=" - " name="minu" onClick="sub l()">
</div></td>
</tr>
<tr>
<td><div align="center">
<input type="button" value=" 7 " name="v7" onClick="sub g()">
</div></td>
<td><div align="center">
<input type="button" value=" 8 " name="v8" onClick="sub h()">
</div></td>
<td><div align="center">
<input type="button" value=" 9 " name="v9" onClick="sub i()">
</div></td>
<td><div align="center">
<input type="button" value=" * " name="mult" onClick="sub m()">
</div></td>
</tr>
<tr>
<td colspan="2"><div align="center">
<input type="button" value=" = " name="eqal" onClick="compute()">
</div></td>
<td><input type="button" value=" CR " name="cr" onClick="crt()"></td>
<td><div align="center">
<input type="button" value=" \ " name="divi" onClick="sub n()">
</div></td>
</tr>
</table>
</div>
</form>
</body>
</html>