function show(num)
{

if(num==1)
{
document.getElementById("sdsx1").className="lanbg";
document.getElementById("ggtz").className="lanbg_b";
document.getElementById("sdsx1info").style.display='block';
document.getElementById("ggtzinfo").style.display='none';
}
else if(num==2)
{
document.getElementById("sdsx1").className="lanbg_b";
document.getElementById("ggtz").className="lanbg";
document.getElementById("sdsx1info").style.display='none';
document.getElementById("ggtzinfo").style.display='block';
}
else if(num==3)
{
document.getElementById("zsgzx").className="lanbg";
document.getElementById("rdwt").className="lanbg_b";

//document.getElementById("zsgzxinfo").style.display='block';
//document.getElementById("rdwtinfo").style.display='none';

}
else if(num==4)
{
document.getElementById("zsgzx").className="lanbg_b";
document.getElementById("rdwt").className="lanbg";

//document.getElementById("zsgzxinfo").style.display='none';
//document.getElementById("rdwtinfo").style.display='block';

}
else if(num==5)
{
document.getElementById("zsgzx").className="lanbg_b";
document.getElementById("rdwt").className="lanbg_b";
document.getElementById("wyzx").className="lanbg";

document.getElementById("zsgzxinfo").style.display='none';
document.getElementById("rdwtinfo").style.display='none';
document.getElementById("wyzxinfo").style.display='block';

}

else if(num==6)
{
document.getElementById("zxfg").className="lanbg";
document.getElementById("ssfl").className="lanbg_b";
document.getElementById("sszc").className="lanbg_b";
document.getElementById("szjj").className="lanbg_b";

document.getElementById("zxfginfo").style.display='block';
document.getElementById("ssflinfo").style.display='none';
document.getElementById("sszcinfo").style.display='none';
document.getElementById("szjjinfo").style.display='none';
}

else if(num==7)
{
document.getElementById("zxfg").className="lanbg_b";
document.getElementById("ssfl").className="lanbg";
document.getElementById("sszc").className="lanbg_b";
document.getElementById("szjj").className="lanbg_b";

document.getElementById("zxfginfo").style.display='none';
document.getElementById("ssflinfo").style.display='block';
document.getElementById("sszcinfo").style.display='none';
document.getElementById("szjjinfo").style.display='none';
}

else if(num==8)
{
document.getElementById("zxfg").className="lanbg_b";
document.getElementById("ssfl").className="lanbg_b";
document.getElementById("sszc").className="lanbg";
document.getElementById("szjj").className="lanbg_b";

document.getElementById("zxfginfo").style.display='none';
document.getElementById("ssflinfo").style.display='none';
document.getElementById("sszcinfo").style.display='block';
document.getElementById("szjjinfo").style.display='none';
}

else if(num==9)
{
document.getElementById("zxfg").className="lanbg_b";
document.getElementById("ssfl").className="lanbg_b";
document.getElementById("sszc").className="lanbg_b";
document.getElementById("szjj").className="lanbg";

document.getElementById("zxfginfo").style.display='none';
document.getElementById("ssflinfo").style.display='none';
document.getElementById("sszcinfo").style.display='none';
document.getElementById("szjjinfo").style.display='block';
}

else if(num==10)
{
document.getElementById("lzjs").className="lanbg";
document.getElementById("lzfg").className="lanbg_b";
document.getElementById("jszx").className="lanbg_b";

document.getElementById("lzjsinfo").style.display='block';
document.getElementById("lzfginfo").style.display='none';
document.getElementById("jszxinfo").style.display='none';
}

else if(num==11)
{
document.getElementById("lzjs").className="lanbg_b";
document.getElementById("lzfg").className="lanbg";
document.getElementById("jszx").className="lanbg_b";

document.getElementById("lzjsinfo").style.display='none';
document.getElementById("lzfginfo").style.display='block';
document.getElementById("jszxinfo").style.display='none';
}

else if(num==12)
{
document.getElementById("lzjs").className="lanbg_b";
document.getElementById("lzfg").className="lanbg_b";
document.getElementById("jszx").className="lanbg";

document.getElementById("lzjsinfo").style.display='none';
document.getElementById("lzfginfo").style.display='none';
document.getElementById("jszxinfo").style.display='block';
}

else if(num==13)
{
document.getElementById("ssxc").className="lanbg";
document.getElementById("ssyj").className="lanbg_b";
document.getElementById("jswm").className="lanbg_b";
document.getElementById("xjdx").className="lanbg_b";

document.getElementById("ssxcinfo").style.display='block';
document.getElementById("ssyjinfo").style.display='none';
document.getElementById("jswminfo").style.display='none';
document.getElementById("xjdxinfo").style.display='none';
}

else if(num==14)
{
document.getElementById("ssxc").className="lanbg_b";
document.getElementById("ssyj").className="lanbg";
document.getElementById("jswm").className="lanbg_b";
document.getElementById("xjdx").className="lanbg_b";

document.getElementById("ssxcinfo").style.display='none';
document.getElementById("ssyjinfo").style.display='block';
document.getElementById("jswminfo").style.display='none';
document.getElementById("xjdxinfo").style.display='none';
}
else if(num==18)
{
document.getElementById("ssxc").className="lanbg_b";
document.getElementById("ssyj").className="lanbg_b";
document.getElementById("jswm").className="lanbg";
document.getElementById("xjdx").className="lanbg_b";

document.getElementById("ssxcinfo").style.display='none';
document.getElementById("ssyjinfo").style.display='none';
document.getElementById("jswminfo").style.display='block';
document.getElementById("xjdxinfo").style.display='none';
}
else if(num==19)
{
document.getElementById("ssxc").className="lanbg_b";
document.getElementById("ssyj").className="lanbg_b";
document.getElementById("jswm").className="lanbg_b";
document.getElementById("xjdx").className="lanbg";

document.getElementById("ssxcinfo").style.display='none';
document.getElementById("ssyjinfo").style.display='none';
document.getElementById("jswminfo").style.display='none';
document.getElementById("xjdxinfo").style.display='block';
}

else if(num==15)
{
document.getElementById("sswx").className="lanbg_b";
document.getElementById("ssqh").className="lanbg";
//document.getElementById("sgfc").className="lanbg_b";

document.getElementById("sswxinfo").style.display='none';
document.getElementById("ssqhinfo").style.display='block';
//document.getElementById("sgfcinfo").style.display='none';
}

else if(num==16)
{
document.getElementById("sswx").className="lanbg";
document.getElementById("ssqh").className="lanbg_b";
//document.getElementById("sgfc").className="lanbg_b";

document.getElementById("sswxinfo").style.display='block';
document.getElementById("ssqhinfo").style.display='none';
//document.getElementById("sgfcinfo").style.display='none';
}

else if(num==17)
{
document.getElementById("sswx").className="lanbg_b";
document.getElementById("ssqh").className="lanbg_b";
document.getElementById("sgfc").className="lanbg";

document.getElementById("sswxinfo").style.display='none';
document.getElementById("ssqhinfo").style.display='none';
document.getElementById("sgfcinfo").style.display='block';
}

}