Probleme de sous menu dans un calque

// ©Xara Ltd 2002 
var ma=new Array();
var mx=new Array();
var my=new Array();
var mc=new Array();
var mal=0;
var main=0;
var menuw=200;
var psrc=0;
var pname="";
var al="";
var gd=0;
var gx,gy;
var NS7=(!document.all&&document.getElementById);
var NS4=(!document.getElementById);
var IE5=(!NS4&&!NS7&&navigator.userAgent.indexOf('MSIE 5.0')!=-1);
if(navigator.userAgent.indexOf('Opera')!=-1)NS4=1;
var NS6=(NS7&&navigator.userAgent.indexOf('Netscape6')!=-1);
function startMainMenu(file,h,w,dir,space,align){if(w>0)menuw=w;
main=dir;
if(main==1||main==2)document.write("<table border=\"0\" cellspacing=\""+space+"\" cellpadding=\"0\">");
if(file!=""){al="";
if(align==1)al=" align=\"right\"";
if(align==2)al=" align=\"center\"";
if(main==1||main==2)document.write("<tr><td"+al+">");
document.write("<img src=\""+loc+file+"\" border=\"0\"");
if(h>0)document.write(" height=\""+h+"\"");
if(w>0)document.write(" width=\""+w+"\"");
document.write(" />");
if(main==1||main==2)document.write("</td>");
if(main==1)document.write("</tr>");
if(main==3)document.write("<br />");
}}function endMainMenu(file,h,w){if(file!=""){if(main==1)document.write("<tr>");
if(main==1||main==2)document.write("<td"+al+">");
document.write("<img src=\""+loc+file+"\" border=\"0\"");
if(h>0)document.write(" height=\""+h+"\"");
if(w>0)document.write(" width=\""+w+"\"");
document.write(" />");
if(main==1||main==2)document.write("</td></tr>");
}if(main==1||main==2)document.write("</table>");
main=0;
}function mainMenuItem(name,ext,h,w,url,tar,alt,dir,state,s){if(NS4&&main==0)return;
var isgraphic=ext.charAt(0)==".";
if(main==1)document.write("<tr>");
if(main==1||main==2)document.write("<td"+al+">");
document.write("<a ");
if(url!=""||!isgraphic)document.write("href=\""+url+"\" ");
if(tar!="")document.write("target=\""+tar+"\" ");
document.write("onmouseout=\"");
if(dir>0)document.write("tidyMenu(event);
");
document.write("\" onmouseover=\"");
if(dir>0)document.write("openMenu(event, '"+name+"',"+dir+","+bc+","+fc+");
");
if(state>1&&isgraphic){document[name+"_over"]=new Image();
document[name+"_over"].src=loc+name+"_over"+ext;
document.write("setGraphic(event, '"+loc+name+"_over"+ext+"');
");
}document.write("return false;
\"");
if(!isgraphic)document.write(" class=\""+s+"\" style=\"width:"+(w>0?w:menuw)+"px\"");
document.write(">");
if(isgraphic){document.write("<img src=\""+loc+name+ext+"\" border=\"0\"");
if(h>0)document.write(" height=\""+h+"\"");
if(w>0)document.write(" width=\""+w+"\"");
if(alt!="")document.write(" alt=\""+alt+"\"");
document.write(" />");
}else{document.write(" "+ext+" ");
}document.write("</a>");
if(main==1||main==2)document.write("</td>");
if(main==1)document.write("</tr>");
if(main==3)document.write("<br />");
}function startSubmenu(name,style,sw){if(NS4)return;
if(sw>0)menuw=sw;
document.write("<div id=\""+name+"\" class=\""+style+"\" style=\"width:"+(menuw+(NS7?bd*2:0))+"px\">");
}function endSubmenu(name){if(NS4)return;
document.write("</div>");
if(!NS7)document.getElementById(name).onmouseout=tidyMenu;
}function submenuItem(text,url,tar,s){if(NS4)return;
if(text.charAt(0)=='<')document.write(text);
else{document.write("<a ");
if(url!="")document.write("href=\""+url+"\" ");
if(tar!="")document.write("target=\""+tar+"\" ");
document.write("class=\""+s+"\" style=\"width:"+menuw+"px\"> "+text+" </a>");
}}function setGraphic(event,name){if(NS4)return;
psrc=(NS7)?event.target:event.srcElement;
pname=psrc.src;
if(NS7)event.target.src=name;
else event.srcElement.src=name;
}function openMenu(event,id,pos,bc,fc){if(NS4)return;
var el,x,y;
if(gd==0){var p=document.getElementById(id);
gx=0;
gy=0;
while(p&&p.parentNode.nodeName!="BODY"){p=p.parentNode;
if(p.nodeName=="DIV"||p.nodeName=="LAYER"||p.nodeName=="SPAN")if(p.style.position=="absolute"){gx+=p.offsetLeft;
gy+=p.offsetTop;
}}if(p)gd=1;
}if(mal>0){el=document.getElementById(ma[mal-1]);
if(mx[mal-1]!=el.offsetLeft||my[mal-1]!=el.offsetTop){el.style.left=mx[mal-1];
el.style.top=my[mal-1];
}tidyMenu(event);
}if(NS7){var p=event.target;
if(p.nodeName!="A"&&p.nodeName!="IMG"&&p.parentNode.nodeName=="A")p=p.parentNode;
dx=p.offsetWidth;
dy=p.offsetHeight;
if(mal==0){x=p.x;
y=p.y;
if(typeof(p.x)=="undefined"||!NS6){x=p.offsetLeft;
y=p.offsetTop;
while(!NS6&&p.parentNode.nodeName!="BODY"){p=p.parentNode;
if(p.nodeName=="TD"||p.nodeName=="TABLE"){x+=p.offsetLeft;
y+=p.offsetTop;
}}}}else{el=document.getElementById(ma[mal-1]);
x=el.offsetLeft;
y=el.offsetTop+p.offsetTop;
}if(pos!=3)x-=bd;
if(pos==3&&mal>0)x+=bd;
}else{x=event.clientX-event.offsetX+document.body.scrollLeft-document.body.clientLeft;
y=event.clientY-event.offsetY+document.body.scrollTop-document.body.clientTop;
dx=event.srcElement.offsetWidth;
dy=event.srcElement.offsetHeight;
if(mal>0){y-=bd;
if(pos!=3)x-=2*bd;
}x-=gx;
y-=gy;
}el=document.getElementById(id);
if(el&&el.style.visibility!="visible"){if(pos==1){x+=dx;
el.style.left=x-el.offsetWidth+"px";
el.style.top=y+"px";
nspeed=el.offsetWidth/frames;
}else if(pos==2){y+=dy;
el.style.left=x+"px";
el.style.top=y-el.offsetHeight+"px";
nspeed=el.offsetHeight/frames;
}else if(pos==3){x-=el.offsetWidth;
el.style.left=x+el.offsetWidth+"px";
el.style.top=y+"px";
nspeed=el.offsetWidth/frames;
}mx[mal]=x;
my[mal]=y;
if(NS7||IE5||frames==0){el.style.left=x+"px";
el.style.top=y+"px";
}if(!IE5)clipMenu(mal,el);
el.style.visibility="visible";
ma[mal]=id;
if(NS7){var p=event.target;
if(p.nodeName!="A"&&p.parentNode.nodeName=="A")p=p.parentNode;
mc[mal]=p.style;
el.onmouseout=tidyMenu;
}else{mc[mal]=event.srcElement.style;
if(mal>0){mc[mal].backgroundColor=bc;
mc[mal].color=fc;
}}mal++;
}}function overMenu(x,y){x-=gx;
y-=gy;
for(i=0;
i<mal;
i++){var el=document.getElementById(ma[i]);
if(el.offsetLeft+el.offsetWidth>x&&el.offsetLeft<=x&&el.offsetTop+el.offsetHeight>y&&el.offsetTop<=y){return ma[i];
}}return "";
}function tidyMenu(e){if(NS4)return;
if(NS7){t=overMenu(e.pageX,e.pageY);
if(t!=""&&(e.target.firstChild==e.relatedTarget||e.target==e.relatedTarget.firstChild))return;
}else t=overMenu(event.clientX+document.body.scrollLeft-document.body.clientLeft,event.clientY+document.body.scrollTop-document.body.clientTop);
om=0;
for(i=0;
i<mal;
i++){var mail=ma[i].length;
if(mail>t.length||t.substring(0,mail)!=ma[i]){var el=document.getElementById(ma[i]);
el.style.visibility="hidden";
mc[i].backgroundColor="";
mc[i].color="";
}else{ma[om]=ma[i];
mx[om]=mx[i];
my[om]=my[i];
om++;
}}mal=om;
if(mal==0&&psrc)psrc.src=pname;
}function animate(){for(i=0;
i<mal;
i++){var el=document.getElementById(ma[i]);
if(el.style.visibility=="visible"){if(el.offsetLeft<mx[i])el.style.left=Math.min(el.offsetLeft+nspeed,mx[i])+"px";
if(el.offsetLeft>mx[i])el.style.left=Math.max(el.offsetLeft-nspeed,mx[i])+"px";
if(el.offsetTop<my[i])el.style.top=Math.min(el.offsetTop+nspeed,my[i])+"px";
clipMenu(i,el);
}}if(mal!=0||frames!=0)setTimeout("animate()",50);
}function clipMenu(i,el){if(el.offsetLeft>mx[i])el.style.clip="rect("+(my[i]-el.offsetTop)+"px "+(el.offsetWidth+(mx[i]-el.offsetLeft))+"px "+el.offsetHeight+"px "+0+"px)";
else el.style.clip="rect("+(my[i]-el.offsetTop)+"px "+el.offsetWidth+"px "+el.offsetHeight+"px "+(mx[i]-el.offsetLeft)+"px)";
}