/* 
registrace udalosti
inicializace pro mapu, footer, dhtml menu, etc...
*/
function regEv(el, ev, fn)
{
    if (el.attachEvent) {
        return el.attachEvent('on'+ev, fn);
    }
    if (el.addEventListener) {
        el.addEventListener(ev, fn, false);
        return true;
    }
    return false;
}