/**
 * @author maciej ćwiek
 */

function openSubMenu(id)
{
	var sub = "sub_" + id.replace(/mnu_/, "");
	var subElem = document.getElementById(sub);

	if(subElem.style.display == "none")
	{
		subElem.style.display = "block";
	}
	else if(subElem.style.display == "")
	{
		subElem.style.display = "block";
	}
	else
	{
		subElem.style.display = "none";
	}
}