其中menu UL UL的left或者right控制向右或者向左显示子菜单

IE8必须增加子菜单，隐藏

 
<link href="../css/right_menu.css" rel="stylesheet" type="text/css"> 
<DIV class=c_l> 
<DIV class=menu> 
<UL> 
<?php 
mysql_select_db($database_lr, $lr); 
$query = mysql_query("SELECT * FROM bigclass order by sort"); 
while($row=mysql_fetch_array($query)) 
{ 
$bigclassid=$row['bigclassid']; 
$bigclassname_leftmenu=$row['bigclassname']; 
if ($htmlname==1){ 
$bigclass_htmlname_leftmenu=$bigclassname_leftmenu;//大类名称 
$bigclass_htmlname_leftmenu=tihuan($bigclass_htmlname_leftmenu); 
} 
if ($htmlname==0){ 
$bigclass_htmlname_leftmenu=$bigclassid; 
} 
?> 
<LI <?php 
//<!--判断是否有小类别--> 
mysql_select_db($database_lr, $lr); 
$query_num="select count(*) from smallclass where bigclassid='$bigclassid'"; 
$rs_num=mysql_query($query_num); 
$myrow_num = @mysql_fetch_array($rs_num); 
$smallclass_num=$myrow_num[0]; 
if ($smallclass_num>0){ 
echo "id=arrow"; 
} 
?>> 
<a href="<?php echo "../".$htmlcatalogue."".$bigclass_htmlname_leftmenu.".html"?>" class="bigclasslink" > <?php echo $row['bigclassname']?><!--[if IE 7]> <!--></a><!--<![endif]--><!--[if lte IE 6]><table><tr><td><![endif]--> 
<?php 
mysql_select_db($database_lr, $lr); 
$query_small = mysql_query("SELECT * FROM smallclass where bigclassid='$bigclassid' order by sort"); 
if ($smallclass_num==0) 
{ 
echo "<ul style='display:none'><LI><A title= 
href=></A> </LI></ul>"; 
} 
else 
{ 
?> <UL> 
<?php 
while($rs=mysql_fetch_array($query_small)) 
{ 
$smallclassid_small_leftmenu=$rs['smallclassid']; 
$smallclassname_small=$rs['smallclassname'];//小类名称 
if ($htmlname==1){ 
$smallclass_htmlname=$smallclassname_small; 
$smallclass_htmlname= tihuan($smallclass_htmlname); 
} 
if ($htmlname==0){ 
$smallclass_htmlname=$smallclassid_small_leftmenu; 
} 
?> 
<LI class=b_top> 
<a href="<?php echo "../".$htmlcatalogue."".$bigclass_htmlname_leftmenu."_".$smallclass_htmlname."_page_1.html"?>" class="smallclasslink"><?php echo $rs['smallclassname']?></a> 
<!--[if lte IE 6.5]><![endif]--> 
</LI> 
<?php 
} 
?> 
</UL> 
<?php }?> 
<!--[if lte IE 6]></td></tr></table></a><![endif]--></LI> 
<?php 
} ?> 
</UL> 
</DIV></DIV> 

CSS文件

 
UL { 
PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none 
} 
LI { 
PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none 
} 
.c_l { 
FLOAT: left; WIDTH: 200px; background:url(../images/right_menu_bg.jpg); 
} 
.menu { 
Z-INDEX: 9999; MARGIN-BOTTOM: 10px; WIDTH: 198px; 
} 
.menu LI { 
FONT-WEIGHT: bold;FLOAT: left; WIDTH: 198px; LINE-HEIGHT: 26px; HEIGHT: 26px ; 
/* 
BACKGROUND: url(../images/line01.gif) repeat-x 50% bottom; 
*/ 
} 
.menu LI A { 
LINE-HEIGHT: 26px; HEIGHT: 26px ; 
/* 
BACKGROUND: url(../images/line01.gif) repeat-x 50% bottom; 
*/ 
} 
#arrow{ 
BACKGROUND: url(../images/aw02.gif) no-repeat 185px 10px; 
LINE-HEIGHT: 26px; HEIGHT: 26px ; 
} 
.menu LI A:hover { 
BACKGROUND: #eeeeee; LINE-HEIGHT: 26px; POSITION: relative; HEIGHT: 26px 
} 
.menu UL UL { 
Z-INDEX: 9999; right: 185px; POSITION: absolute; TOP: -10000000px;background:url(../images/right_menu_bg.jpg);/*smallclass right kongzhi celafangxiang*/ 
} 
.menu UL UL LI { 
DISPLAY: block; FONT-WEIGHT: normal; BACKGROUND: url(../images/aw02.gif) no-repeat 10px 10px; LINE-HEIGHT: 25px! important; TOP: 0px! important; HEIGHT: 25px! important 
} 
.menu UL UL .b_top { 
BORDER-LEFT-WIDTH: 0px; WIDTH: 199px; 
} 
.menu UL UL .b_top A { 
DISPLAY: block 
} 
.menu A { 
PADDING-RIGHT: 0px; DISPLAY: block; PADDING-LEFT: 0px; FLOAT: left; PADDING-BOTTOM: 0px; WIDTH: 198px; TEXT-INDENT: 18px; PADDING-TOP: 0px; TEXT-DECORATION: none 
} 
.menu A:visited { 
PADDING-RIGHT: 0px; DISPLAY: block; PADDING-LEFT: 0px; FLOAT: left; PADDING-BOTTOM: 0px; WIDTH: 198px; TEXT-INDENT: 18px; PADDING-TOP: 0px; TEXT-DECORATION: none 
} 
.menu UL UL LI A { 
DISPLAY: block; BACKGROUND: none transparent scroll repeat 0% 0%; COLOR: #000; TOP: 0px! important; HEIGHT: 25px! important 
} 
.menu UL UL LI A:visited { 
DISPLAY: block; BACKGROUND: none transparent scroll repeat 0% 0%; COLOR: #000; TOP: 0px! important; HEIGHT: 25px! important 
} 
.menu UL UL LI A:hover { 
DISPLAY: block; BACKGROUND: url(../images/aw02.gif) #eee no-repeat 10px 10px; WIDTH: 198px; COLOR: #d15400; BORDER-TOP-STYLE: none; BORDER-RIGHT-STYLE: none; BORDER-LEFT-STYLE: none; TOP: 0px! important; HEIGHT: 25px! important; BORDER-BOTTOM-STYLE: none 
} 
.menu TABLE { 
PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; WIDTH: 0px; PADDING-TOP: 0px; BORDER-COLLAPSE: collapse; HEIGHT: 0px 
} 
* HTML .menu A:hover { 
POSITION: relative 
} 
.menu LI:hover { 
POSITION: relative 
} 
.menu UL :hover UL { 
TOP: -1px 
} 
.menu UL LI:hover > A { 
BACKGROUND: #eee; POSITION: relative; TEXT-DECORATION: none 
} 
.menu UL LI UL LI:hover > A { 
BORDER-TOP-STYLE: none; BORDER-RIGHT-STYLE: none; BORDER-LEFT-STYLE: none; POSITION: relative; TOP: 0px; BORDER-BOTTOM-STYLE: none 
} 

其中menu UL UL的left或者right控制向右或者向左显示子菜单