<HEAD>
<SCRIPT LANGUAGE="JavaScript">
<!--
function dsp_calc() {
document.frm.result.value =
eval(document.frm.num1.value) + eval(document.frm.num2.value);
}
//-->
</SCRIPT>
</HEAD>
<BODY>
<CENTER>
<form name=frm>
<table border=2 cellpadding=2>
<tr>
<td align=right>
<font color=blue size=2>数字１
</td><td>
<input type=text name="num1" value=2 size=10>
</td></tr>
<tr>
<td align=right>
<font color=blue size=2>数字２
</td><td>
<input type=text name="num2" value=5 size=10>
</td></tr>
<tr>
<td align=right>
<font color=blue size=2>答え
</td><td>
<input type=text name="result" size=10>
</td></tr>
<tr>
<td align=center colspan=2>
<input type=button value="足し算する" onclick=dsp_calc()>
</td></tr></table>
</form>
</CENTER>
</BODY>
</HTML>