var nLastOpen = -1;
var nLastHighlight = -1;

function aufmachen(nummer) {
 var idName;
 var idName2;

 schliessen();

 if(document.getElementById) {
  idName  = "sub" + nummer + "";
  idName2 = "menu" + nummer + "";
  if (document.getElementById(idName)) {
   document.getElementById(idName).style.visibility = "visible";
   nLastOpen = nummer;
  }
  if (document.getElementById(idName2)) {
   document.getElementById(idName2).style.backgroundColor = "#A41818";
   nLastHighlight = nummer;
  }
 }
}

function schliessen() {
 var idName;
 var idName2;

 if (nLastOpen != -1) {
  //close old one

  if(document.getElementById) {
    if (nLastOpen != nCurrent) {
      idName  = "sub" +  nLastOpen + "";
      if (document.getElementById(idName)) {
        document.getElementById(idName).style.visibility = "hidden";
      }
    }
    if (nLastHighlight != nCurrent) {
      idName2 = "menu" + nLastHighlight + "";
      if (document.getElementById(idName2)) {
        document.getElementById(idName2).style.backgroundColor = "#838e64";
      }
    }  
  }

  nLastOpen = -1;
  nLastHighligh = -1;
 }
}

function alleSchliessen() {
 var idName, idName2, i;
 if(document.getElementById) {
  for (i = 1; i < 7; i++) {
   idName  = "sub" + i + "";
   idName2 = "menu" + i + "";
   if (i != nCurrent) {
    if (document.getElementById(idName)) {
     document.getElementById(idName).style.visibility = "hidden";
    }
    if (document.getElementById(idName2)) {
     document.getElementById(idName2).style.backgroundColor = "#838e64";
    }
   } else {
    if (document.getElementById(idName)) {
     document.getElementById(idName).style.visibility = "visible";
    }
    if (document.getElementById(idName2)) {
     document.getElementById(idName2).style.backgroundColor = "#A41818";
    }
   }
  }
 }
 nLastOpen = -1;
 nLastHighligh = -1;
}