function hideForm()
{
	document.getElementById('filters').style.display = "none";
	document.getElementById('show_f').style.display = "inline";
	document.getElementById('hide_f').style.display = "none";
}
function showForm()
{
	document.getElementById('filters').style.display = "block";
	document.getElementById('show_f').style.display = "none";
	document.getElementById('hide_f').style.display = "inline";
}