求助javascript div的隐藏
<div class="art_yywb_bt">
<div class="basic_information">
<div class="logo_ico">
<div class="logo_tu"></div>
<span>小明的人际关系关系</span>
</div>
<div class="logo_bg"></div>
</div>
</div>
<div id="star_friend">
<DIV class=feature id=my-glider>
<DIV class=scroller>
<DIV class=content>
</DIV>
</DIV>
<A id=prevLink onClick="my_glider.previous();return false;" href="#">Previous</A>? <A id=nextLink onClick="my_glider.next();return false" href="#">Next</A>
<SCRIPT language=javascript type=text/javascript>
var my_glider = new Glider('my-glider', {duration:0.5});
</SCRIPT>
</DIV>
</div>
如果<DIV class=content>这个div的内容为空的话则把<div class="art_yywb_bt">隐藏,具体怎么实现求帮忙