//preloading images:
//aa1.src = "graphics/strzalkamenu.gif";
//aa2.src = "graphics/strzalkamenu_ruch.gif";

function rollIn(IMGid, afterIMG )
{ 
		//document.images[IMGid].src = eval(afterIMG + ".src"); 
		document.images[IMGid].src = afterIMG;
		return true;
}

function rollOut(IMGid, afterIMG)
{
		//document.images[IMGid].src = eval(afterIMG + ".src");
		document.images[IMGid].src = afterIMG;
		return true; 
}