/*document.getElementsByClassName = function(cl) {
var retnode = [];
var myclass = new RegExp('\\b'+cl+'\\b');
var elem = this.getElementsByTagName('*');
for (var i = 0; i < elem.length; i++) {
var classes = elem[i].className;
if (myclass.test(classes)) retnode.push(elem[i]);
}
return retnode;
};*/

function schovej_submenu() {
	var pocet = document.getElementById('pocet_sub');
	/*var submenus=document.getElementsByName('submenu');
	alert(submenus.length);
	for each (var s in submenus) {
		//alert (s.c);
	}*/
	for (i = 1; i <= pocet.value; i++ ) {
		var sub = document.getElementById('submenu_'+i);
		sub.style.display = 'none';
	}
}

function aktivuj_submenu (i) {
	var submenu = document.getElementById('submenu_'+i);
	schovej_submenu();
	submenu.style.display = '';
}