function MM_showHideLayers() { //v9.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
 
  with (document) if (getElementById && ((obj=getElementById(args[0]))!=null)) { v=args[2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v;drop(args[3], v) }
}

function drop(e, s){
	
	
	//window.status = s + '  ' + e.className
	
	if(e.className=='dropdown' && s=='visible'){
		e.className = 'dropdown_hover'
	}
	if(e.className=='dropdown_hover' && s=='hidden'){
		e.className = 'dropdown'
	}
	
	/*
	if(s=='visible'){
			e.className = 'dropdown_hover'
	}else{
			e.className = 'dropdown'	
	}*/
	
}