function showhide(id)
{
	var el = document.getElementById(id).style;
	if(el.display == 'none')
	{
		el.display = '';
		el.visibility = '';
	}
	else
	{
		el.display = 'none';
		el.visibility = 'hidden';
	}
}

function show(id)
{
	var el = document.getElementById(id).style;
	if(el.display == 'none')
	{
		el.display = '';
		el.visibility = '';
	}
}

function hide(id)
{
	var el = document.getElementById(id).style;
	if(el.display != 'none')
	{
		el.display = 'none';
		el.visibility = 'hidden';
	}
}