function visible1()
 { 
      ObjSel = docObj + "ebene1" + closeObj + styleObj;
      ObjId = eval(ObjSel);
      ObjId.visibility = "visible";
 }
 
function visible2()
 { 
      ObjSel = docObj + "ebene2" + closeObj + styleObj;
      ObjId = eval(ObjSel);
      ObjId.visibility = "visible";
 }

function visible3()
 { 
      ObjSel = docObj + "ebene3" + closeObj + styleObj;
      ObjId = eval(ObjSel);
      ObjId.visibility = "visible";
 }

function hide1()
 { 
      ObjSel = docObj + "ebene1" + closeObj + styleObj;
      ObjId = eval(ObjSel);
      ObjId.visibility = "hidden";
 }

function hide2()
{ 
      ObjSel = docObj + "ebene2" + closeObj + styleObj;
      ObjId = eval(ObjSel);
      ObjId.visibility = "hidden";
 } 

function hide3()
{ 
      ObjSel = docObj + "ebene3" + closeObj + styleObj;
      ObjId = eval(ObjSel);
      ObjId.visibility = "hidden";
 } 

function hideall()
  { 
    for (i=3; i < 5; i++)
    
    { ObjSel = docObj + "ebene" + i + closeObj + styleObj;
      ObjId = eval(ObjSel);
      ObjId.visibility = "hidden";
    }
  }