if (!document.getElementById)

    document.getElementById = function() { return null; }



function izkutatu() {
    var a, i;
    a = document.getElementsByTagName("ul");
    for (i=0; i<a.length; i++) {
        if (a[i].className == "submenu")
            a[i].style.display = "none";
    }
    /*for (j=0; j<a.length; j++) {
        if (a[j].className == "submenuactivo")
            a[j].style.display = "none";
    }*/
}

function izkutatuba(){
	bigarrenmenu.className.style.display=="none";
}

function agertu(activa){

  var menu = document.getElementById(activa);

    if(menu.style.display == "none"){

		izkutatu();		

      menu.style.display = "block";	  	

    }

    else{

      menu.style.display = "none";

    }

}



window.onload = function() {

	/*izkutatu();*/

}