function sh(id)
{
	var w = document.getElementById(id);	
	if(w.style.display=='block')
	{
		w.style.display='none';
	}
	else
	{
		w.style.display='block';
	}
}
function h(id)
{
	var w = document.getElementById(id);	
	w.style.display='none';
}
function s(id)
{
	var w = document.getElementById(id);	
	w.style.display='block';
}