// Webtip.cz - DHTML knihovna
// verze 0.5

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 actMenu = 0;
function openMenu (n) {
	if (n==actMenu) {
		objDisplay('sm'+n,false);
		actMenu = 0;
		}
	else {
		if (actMenu) objDisplay('sm'+actMenu,false);
		objDisplay('sm'+n,true);
		actMenu = n;
		}
}