<a onfocus=this.blur() href="javascript:void(0)" class="l-button" style="width:80px" onclick='log_1()'>
<img id="img_a" border=0 align="middle" src="login_image/a_1.jpg" alt="没有图片!"> </img>
</a>
onfocus=this.blur()
增加这个,可以去掉!