javascript弹出式菜单

那下面的是我没有发过的代码的前26行，还有90多行呢，发不上来，高手看下这些跟控制显示效果有关吗？
// Ver: 4.3.31226
if(typeof(st_js)=="undefined"){
stAHCM=0;// 0
stAHWS=1;// 1
stSMSC=1;// 1
stSCSP=0;// 0
stCFSP=0;// 0
stBIMG=1;// 1
stDF55=0;// 0
stMMSZ=10;// 10
nOP=nOP5=nIE=nIE4=nIE5=nNN=nNN4=nNN6=nMAC=nIEM=nIEW=nDM=nVER=st_delb=st_addb=st_scd=0,stmozb=0;stnav();st_reg=!(nIEW&&nVER>=5.5&&nVER<6&&stDF55);
st_ttb=nIE;stHAL=["left","center","right"];stVAL=["top","middle","bottom"];stREP=["no-repeat","repeat-x","repeat-y","repeat"];stBDS=["none","solid","double","dotted","dashed","groove","ridge"];
st_gc=st_rl=st_cl=st_ct=st_cw=st_ch=st_cm=st_cp=st_ci=st_load=st_scr=0;st_ht="";st_ims=[];st_ms=[];stusrld=[];
if(nNN4){stitovn=stevfn("stitov",1);stitoun=stevfn("stitou",1);stitckn=stevfn("stitck",1);stppovn=stevfn("stppov",0);stppoun=stevfn("stppou",0);}
if(nIE4||nNN4)onerror=function(m,u,l){if(!confirm("Java Script Error\n"+"\nDescription:"+m+"\nSource:"+u+"\nLine:"+l+"\n\nSee more details?"))onerror=null;}
if(nIEM||nOP5)onunload=function(){for(var j=0;j<st_ms.length;++j)st_ms[j].cfrm=0;return true;}
if(nDM&&!nNN4)
{
var s="<STYLE>\n.st_tbcss,.st_tdcss,.st_divcss,.st_ftcss{border:none;padding:0px;margin:0px;}\nA.st_acss:hover{background-color:transparent;}\n</STYLE>";
for(var j=0;j<stMMSZ;++j)
s+="<FONT ID=st_gl"+j+"></FONT>";
if(nIEW&&nVER>=5&&document.body)
document.body.insertAdjacentHTML("AfterBegin",s);
else
document.write(s);
}st_js=1;}