<div>Dear friend</div>
<div>Can you teach me &nbsp;how to add check_box before group(map),just like before map(layer list)?</div>
<div>The pictures&nbsp;are as follow,what should I do ? Can you give me some advices?</div>
<div>Thanks!<br><img style="WIDTH: 226px; CURSOR: hand; HEIGHT: 129px" src="http://tg1a119.mail.163.com/a/s?func=mbox:getMessageData&amp;sid=jCSeHDkkwtFfYFmNylkklqqLnVgwBFCC&amp;mid=21:1tbiFR8I40kSqPRJ3AAAsz&amp;part=3" border="0">&nbsp; <img style="WIDTH: 226px; HEIGHT: 129px" src="http://tg1a119.mail.163.com/a/s?func=mbox:getComposeData&amp;sid=jCSeHDkkwtFfYFmNylkklqqLnVgwBFCC&amp;composeId=jChSHDkkMMFfYFAKglkkrZVnqeYbEbiN&amp;attachId=1&amp;rnd=0.29348837113821913" border="0"><br clear="all">
<br>-- <br>Leopard<br><br></div>