function showMenu(actualCat)
{

	for (i=0;i<menuCats;i++)
	{
		for (j=0;j<menuSubCats[i];j++)
			document.getElementById("mnu_"+(i+1)+"_"+(j+1)).style.display = "none";
	}
	for (i=0;i<menuSubCats[actualCat-1];i++)
	{
		//alert(menuSubCats[actualCat]+", "+actualCat+", "+(i+1));
		document.getElementById("mnu_"+actualCat+"_"+(i+1)).style.display = "";
	}
}