导航栏触发效果问题

修改后： 
---------------------------------------------------------------- <HTML > <HEAD> <STYLE type=text/css> .tt4_active 
{ 
padding:0px; FONT-WEIGHT: bold; FONT-SIZE: 12px; BACKGROUND: url('tt1_taba_1.gif') no-repeat; FLOAT: left; WIDTH: 60px; CURSOR: pointer; COLOR: #329800; HEIGHT: 27px; margin-left:1px; margin-right:1px; margin-top:3px; margin-bottom:0px 
} 
.tt4_normal 
{ 
padding:0px; FONT-SIZE: 12px; BACKGROUND: url('tt1_taba_0.gif') no-repeat; FLOAT: left; WIDTH: 60px; CURSOR: pointer; COLOR: #445f34; HEIGHT: 22px; margin-left:1px; margin-right:1px; margin-top:3px; margin-bottom:0px 
} </STYLE> </HEAD> 
<BODY> 
<TABLE style="BORDER-RIGHT: #d7e0cc 1px solid; BORDER-TOP: #d7e0cc 1px solid; BORDER-LEFT: #d7e0cc 1px solid; BORDER-BOTTOM: #d7e0cc 1px solid; BACKGROUND-COLOR: #ffffff" cellSpacing=0 cellPadding=0 width=451 border=0> 
  <TBODY> 
  <TR> 
    <TD width="449" style="PADDING-TOP: 5px"> 
      <SCRIPT type=text/javascript> 
<!--//--> <![CDATA[//> <!-- 
function nTab(id_num,num,no,name,cl_name) 
{ 
for(var i=0;i <no;i++) 
{ 
document.getElementById(name+"_"+id_num+i).style.display="none"; 
} for(var i=0;i <no;i++) 
{ 
document.getElementById(name+"_nav_"+id_num+i).className="tt"+cl_name+"_normal tc lh22"; 
} document.getElementById(name+"_nav_"+id_num+num).className="tt"+cl_name+"_active tc lh22"; 
document.getElementById(name+"_"+id_num+num).style.display="block"; 
} 
//--> <!]]> 
      </SCRIPT>       <TABLE class=linkblack cellSpacing=0 cellPadding=0 width="100%"> 
        <TBODY> 
        <TR> 
          <TD width=5> 
            <TABLE style="MARGIN-BOTTOM: 4px" cellSpacing=0 cellPadding=0  width="100%" border=0> 
              <TBODY> 
              <TR> 
                <TD class=bbb>&nbsp; </TD> </TR> </TBODY> </TABLE> </TD> 
          <TD class="tt4_active tc lh22" id=lp_nav_10 
          onmouseover="nTab(1,0,6,'lp',4)"> 
            <DIV align=center>地板 </DIV> </TD> 
          <TD width=5> 
            <TABLE style="MARGIN-BOTTOM: 4px" cellSpacing=0 cellPadding=0 
            width="100%" border=0> 
              <TBODY> 
              <TR> 
                <TD class=bbb>&nbsp; </TD> </TR> </TBODY> </TABLE> </TD> 
          <TD class="tt4_normal tc lh22" id=lp_nav_11 
          onmouseover="nTab(1,1,6,'lp',4)"> 
            <DIV align=center>橱柜 </DIV> </TD> 
          <TD width=5> 
            <TABLE style="MARGIN-BOTTOM: 4px" cellSpacing=0 cellPadding=0 
            width="100%" border=0> 
              <TBODY> 
              <TR> 
                <TD class=bbb>&nbsp; </TD> </TR> </TBODY> </TABLE> </TD> 
          <TD class="tt4_normal tc lh22" id=lp_nav_12 
          onmouseover="nTab(1,2,6,'lp',4)"> 
            <DIV align=center>瓷砖 </DIV> </TD> 
          <TD width=5> 
            <TABLE style="MARGIN-BOTTOM: 4px" cellSpacing=0 cellPadding=0 
            width="100%" border=0> 
              <TBODY> 
              <TR> 
                <TD class=bbb>&nbsp; </TD> </TR> </TBODY> </TABLE> </TD> 
          <TD class="tt4_normal tc lh22" id=lp_nav_13 
          onmouseover="nTab(1,3,6,'lp',4)"> 
            <DIV align=center>卫浴 </DIV> </TD> 
<TD width=5> 
            <TABLE style="MARGIN-BOTTOM: 4px" cellSpacing=0 cellPadding=0 
            width="100%" border=0> 
              <TBODY> 
              <TR> 
                <TD class=bbb>&nbsp; </TD> </TR> </TBODY> </TABLE> </TD> 
          <TD class="tt4_normal tc lh22" id=lp_nav_14 
          onmouseover="nTab(1,4,6,'lp',4)"> 
            <DIV align=center>橱柜1 </DIV> </TD> 
<TD width=5> 
            <TABLE style="MARGIN-BOTTOM: 4px" cellSpacing=0 cellPadding=0 
            width="100%" border=0> 
              <TBODY> 
              <TR> 
                <TD class=bbb>&nbsp; </TD> </TR> </TBODY> </TABLE> </TD> 
          <TD class="tt4_normal tc lh22" id=lp_nav_15 
          onmouseover="nTab(1,5,6,'lp',4)"> 
            <DIV align=center>卫浴1 </DIV> </TD> 
          <TD> 
            <TABLE style="MARGIN-BOTTOM: 4px" cellSpacing=0 cellPadding=0 
            width="100%" border=0> 
              <TBODY> 
              <TR> 
                <TD class=bbb>&nbsp; 
    </TD> </TR> </TBODY> </TABLE> </TD> </TR> </TBODY> </TABLE> </TD> </TR> 
  <TR> 
    <TD style="PADDING-RIGHT: 0px; PADDING-BOTTOM: 10px" align=left 
    bgColor=#ffffff> 
      <DIV id=lp_10> 
      
        玉器：和田玉| 青海玉水晶玛瑙 
      </DIV> 
      <DIV id=lp_11 style="DISPLAY: none"> 
    feigoie费界 </DIV>       <DIV id=lp_12 style="DISPLAY: none"> 
    哦年公司很疯得fgsdfgdfgdfgsdgfs </DIV>       <DIV id=lp_13 style="DISPLAY: none"> 
      不行的 gfgdfgdgdgdg </DIV> <DIV id=lp_14 style="DISPLAY: none"> 
    玉器1：和田玉 | 青海玉 | </DIV> 
<DIV id=lp_15 style="DISPLAY: none"> 
    
      玉器2：和田玉 | 青海玉 | </DIV> 
</TR> </TBODY> </TABLE> </BODY> </HTML>