点击验证码可以刷新验证码

<img src="code.jsp" alt="验证码" height="20" align="bottom" style="cursor:pointer;" title="看不清可单击图片刷新" onclick="this.src='code.jsp?d='+Math.random();" />

 

onClick="javascript:document.getElementById('codeimage').src='<?php echo SHOP_SITE_URL?>/index.php?act=seccode&op=makecode&nchash=<?php echo getNchash();?>&t=' + Math.random();"