function showSub(mid,pid){
	document.getElementById(mid).style.display = 'block';
	if (document.getElementById(pid))	document.getElementById(mid).style.left = (document.getElementById(pid).parentNode.offsetLeft)+'px';
}
function hideSub(mid){
	document.getElementById(mid).style.display = 'none';
}
function hideAllSubs(ids){
	mids = ids.split(",");
	var i =0;
	while (mids[i]){
		hideSub(mids[i]);
		i++;
	};
}