function initMain(){
	warstwa = new DynLayer("menu", null);
	ile_scroll();
	if (is.ie) window.onscroll = ile_scroll;
	else setInterval("ile_scroll()", 300);
	poz_x=is.ie?eval(document.body.offsetWidth):eval(innerWidth);
	poz_x=(poz_x<=790)?0:(poz_x-790)/2;
	warstwa.moveTo(poz_x,null);
	warstwa.show();
}

function ile_scroll() {
	scrolled = (is.ns)? pageYOffset : document.body.scrollTop;
	if (!w_ruchu) animuj();
}

poz_top = 0; w_ruchu = false;
function animuj() {
	if(scrolled != poz_top) {
		w_ruchu = true;
		krok = (scrolled - poz_top)/10;
		krok=(krok > 0)?Math.ceil(krok):Math.floor(krok);
		poz_top = poz_top + krok;
		warstwa.moveBy(null, krok);
		setTimeout('animuj()', 20);
	}
	else
		w_ruchu = false;
}