function ShowWindow(win){
	var winback=win+"Back";
	wys = document.body.offsetHeight;
	document.getElementById(win).style.display='block';
	document.getElementById(winback).style.display='block';
	document.getElementById(winback).style.offsetHeight=wys;
}

function HideWindow(win){
	var winback=win+"Back";
	document.getElementById(win).style.display='none';
	document.getElementById(winback).style.display='none';
}