关于导航
<%if mid(menu,1,1)<>"1" then%>
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=5,0,0,0" width="96" height="52" id=ShockwaveFlash2>
<param name=movie value="images/nav/bt_company.swf">
<param name=quality value=high>
<param name="wmode" value="transparent">
<embed src="images/nav/bt_company.swf" quality=high pluginspage="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash" type="application/x-shockwave-flash" width="96" height="52">
</embed>
</object>
<%else%>
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=5,0,0,0" width="96" height="52" id=ShockwaveFlash2>
<param name=movie value="images/nav/bt_company2.swf">
<param name=quality value=high>
<param name="wmode" value="transparent">
<embed src="images/nav/bt_company2.swf" quality=high pluginspage="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash" type="application/x-shockwave-flash" width="96" height="52"> </embed>
</object>
以上是一个FLASH导航,两个FLASH在同一个导航栏, <%if mid(menu,1,1)<>"1" then%>
.....
<%else%>
.....
不明白这段语句是什么意思