下拉框美化span.blueCircle_downArrow{overflow:hidden;margin:0;padding:020px010px;background:url(blueCircle_bg.gif)no-repeat;vertical-align:middle;line-height:25px;text-align:left;cursor:pointer;font-size:13px;color:#000;width:160px;height:25px;zoom:1;display:inline-block;}.blueCircle{display:none;position:absolute;margin:-4px00;