<!--

function objGet(x) {
	if (typeof x != 'string') return x;
	else if (Boolean(document.getElementById)) return document.getElementById(x);
	else if (Boolean(document.all)) return eval('document.all.'+x);
	else return null;
}

function objSetStyle (obj,prop,val) {
	var o = objGet(obj);
	if (o && o.style) {
		eval ('o.style.'+prop+'="'+val+'"');
		return true;
		}
	else return false;
	}

function objShow (obj,on) {
	return objSetStyle(obj,'visibility',(on) ? 'visible':'hidden');
	}

function objDisplay (obj,on,type) {
	if (on && !type) type = 'block';
	return objSetStyle(obj,'display',(on) ? type:'none');
	}

// Ceske ekvivalenty funkci:

var objNajdi = objGet;
var objNastavStyl = objSetStyle;
var objZobraz = objShow;

var dis = false;
var dis2 = false;
var dis3 = false;
var dis4 = false;
var dis5 = false;
 
 function run() 
    {
   		dis = !dis;
		objDisplay('menu1',dis);
    }
	
function run2()
	{
		dis2 = !dis2;
		objDisplay('menu2',dis2);
	}
	
	function run3()
	{
		dis3 = !dis3;
		objDisplay('menu3',dis3);
	}
	
	function run4()
	{
		dis4 = !dis4;
		objDisplay('menu4',dis4);
	}
	
	function run5()
	{
		dis5 = !dis5;
		objDisplay('menu5',dis5);
	}

-->