function ListOpenClose( seq )
{
	var obj = document.getElementById(seq+"_list");
	var obj2 = document.getElementById(seq+"_head_back");
	if ( obj.style.display=="none" )
	{
		obj.style.display="";
		obj2.innerHTML = "HIDE" ; 
	}
	else
	{
		obj.style.display="none";
		obj2.innerHTML = "SHOW" ; 
	}
}