帮忙看看:
<input  name="g_num[]" type="text" class="12_grey2_ST" id="g_num[]" value="<?php echo $select_row["c_num"];?>  " size="4" onKeypress="return (/[\d.]/.test(String.fromCharCode(event.keyCode)))" style="ime-mode:Disabled"  onMouseOver="this.select()" onfocus="this.select()" onKeyUp="alipayment.submit()">表单是:
<form action="" method="post" name="alipayment" id="alipayment">