if(document.getElementById("head_ad_690"))  document.getElementById("head_ad_690").innerHTML="<table><tr><!-- 第一个广告图 --><td><a href='http://ld0088.com/?intr=20953' target='_blank'><img src='http://www.mfzhibo.com/Uploadfiles/2011/09/14/81807c51-cbb4-4396-8e48-5be8112d412e.gif' width='373' height='55' /></a></td><!-- 第二个广告图 --><td><a href='http://www.mfzhibo.com/About/Contact.aspx' target='_blank'><img src='http://www.mfzhibo.com/Uploadfiles/2012/02/22/7b003ae1-33f3-4d77-8bc2-5bea21be2c11.gif' width='373' height='55'/></a></td></tr></table>";