function MM_showHideLayers() { //v3.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
    obj.visibility=v; }
}

function MM_over(layername) {
  MM_showHideLayers('layername','','show');
  MM_menuout = false ;
  clearTimeout(MM_menutimeoutID);
}

function MM_out() {
MM_menuout = true ;
MM_menutimeoutID = setTimeout("autohide_menu()","1800");
}
var MM_menuout = true
var MM_menutimeoutID = 1

function autohide_menu() {
if (MM_menuout == true){
  MM_showHideLayers('Layer1','','hide','Layer2','','hide','Layer3','','hide','Layer4','','hide');
}
}
function hideother(layername) {
  if (layername != 'Layer1'){
    MM_showHideLayers('Layer1','','hide');
  }
  if (layername != 'Layer2'){
    MM_showHideLayers('Layer2','','hide');
  }
  if (layername != 'Layer3'){
    MM_showHideLayers('Layer3','','hide');
  }
if (layername != 'Layer4'){
    MM_showHideLayers('Layer4','','hide');
  }
}