<!--
function tab (mod,cursor,n){
	for(i=1;i<=n;i++){
		var nav=document.getelementbyid(mod+i);
		var cont=document.getelementbyid(mod+"_"+"cont"+i);
		nav.classname=(i==cursor)?"current":"";
		cont.style.display=(i==cursor)?"block":"none";
	}
}
//-->


// javascript document

function showmenu(obj,n){
 var nav = obj.parentnode;
 if(!nav.id){
  var bname = nav.getelementsbytagname("ul");
  var hname = nav.getelementsbytagname("h2");
  var t = 2;
 }else{
  var bname = document.getelementbyid(nav.id).getelementsbytagname("span");
  var hname = document.getelementbyid(nav.id).getelementsbytagname("h1");
  var t = 1;
 }
 for(var i=0; i<hname.length;i++){
  hname[i].innerhtml = hname[i].innerhtml.replace("-","+");
  hname[i].classname = "";
 }
 obj.classname = "h" + t;
 for(var i=0; i<bname.length; i++){if(i!=n){bname[i].classname = "no";}}
 if(bname[n].classname == "no"){
  bname[n].classname = "";
  obj.innerhtml = obj.innerhtml.replace("+","-");
 }else{
  bname[n].classname = "no";
  obj.classname = "";
  obj.innerhtml = obj.innerhtml.replace("-","+");
 }
}