// JavaScript Document
var _height=null;
function hide(_d){
	var _x = document.getElementById(_d);
	if(_height==null)_height=_x.style.height;
	_x.style.visibility="hidden";
	_x.style.overflow="hidden";
	_x.style.height="1px";
}
function sh(_d){
	var _x = document.getElementById(_d);
	if(_height==null)_height=_x.style.height;
	_x.style.visibility=_x.style.visibility=="hidden"?"visible":"hidden";
	_x.style.overflow=_x.style.overflow=="hidden"?"visible":"hidden";
	_x.style.height=_x.style.height=="1px"?"1em":"1px";
}