function Switch(obj) {

var obj=document.getElementsByName('menu_'+obj);
for(var i=0,j=obj.length;i<j;i+=1) {
    if (obj[i].style.display=="none") {
            obj[i].style.display="block";
    } else {
            obj[i].style.display="none";
    }
  }
}
function bookmark(){
var title = 'Hortobágyi Halgazdaság';
var url = 'http://www.hhgrt.hu';
   if (document.all)
        window.external.AddFavorite(url, title);
	   else if (window.sidebar)
	        window.sidebar.addPanel(title, url, "")
		   else if (window.sidebar&&window.sidebar.addPanel)
		        window.sidebar.addPanel(title,url,"");
}