<head> <title></title> <script type="text/javascript"> // 合計計算用 function MyCalc(arg1, price, total){ var cnt = arg1.options[arg1.selected="selected"Index].value; total.value = cnt * price.value; return false; } </script> </head> <body> <form name="form1" action="" > <table> <tr bgcolor="#f0f0e8"> <th>品番</th><th>品名</th><th>単価</th><th>数量</th><th>小計</th></tr> <tr><td>50001</td><td>Pentax MZ3</td> <td