：<input name='checkimg' type='text' class='input' id='checkimg' style='width: 50px;' maxlength='6' /><a href='javascript：refreshimg()' title='看不清楚，换个图片'><img id='checkcode' src="Include/checkcode.asp" align="absmiddle" border="0" style='border: 1px solid #ffffff'/></a> <span class="FontRed">* </span><a href='javascript：refreshimg()' title='看不清楚，换个图片'><font color='blue'>看不清楚，换个图片</font></a>
<script type="text/javascript">
function refreshimg(){document.all.checkcode.src='include/checkcode.asp';}
</script>
