function hidesubmenu(num)
{
	var i = 1;
	var j =1;
	for(i=1;i<=num;i++)
	{
		j =1;
        var id = "p_" + i;
        document.getElementById(id).style.display = "none";
        
		if (eval(id)!= 0)
        {
		for(j=1;j<=eval(id);j++)
            {
                var sid = id + "_" + j;
                document.getElementById(sid).style.display = "none";
            }
        }
    }
}
function showhide(id,num)
{
	if (document.getElementById(id).style.display == "none")
    {
		hidesubmenu(num);
		document.getElementById(id).style.display = "block";
	}
	else
		{
		if (document.getElementById(id).style.display == "block")
    	{
		document.getElementById(id).style.display = "none";
		}
		}
}