var m1c, m1t;
var m2c, m2t;
var m3c, m3t;
var m4c, m4t;
var m5c, m5t;

function layer_show (name) {
	hide_filter();
	if (document.layers)
	{
		if (document.layers[name]) document.layers[name].visibility = "show";
	}
	else
	{
		if (document.getElementById(name) && document.getElementById(name).style) document.getElementById(name).style.visibility = "visible";
	}
}

function layer_hide (name) {
	if (document.layers)
	{
		if (document.layers[name]) document.layers[name].visibility = "hide";
	} 
	else 
	{
		if (document.getElementById(name) && document.getElementById(name).style) document.getElementById(name).style.visibility = "hidden";
	}
}

function m1s(name) {
	if (m1c && m1c != name) layer_hide(m1c);
	m1c = name;
	layer_show(m1c);
	if (m1t) clearTimeout(m1t);
	m1t = 0;
}

function m1h(name) {
	m1t = setTimeout('layer_hide(\''+name+'\');show_filter();', 500);
}

function m2s(name) {
	if ( m2c && m2c != name ) layer_hide(m2c);
	m2c = name;
	layer_show(m2c);
	if (m1t) clearTimeout(m1t);
	if (m2t) clearTimeout(m2t);
	m1t = 0;
	m2t = 0;
}

function m2h(name) {
	m1t = setTimeout('layer_hide(\''+m1c+'\');show_filter();', 500);
	m2t = setTimeout('layer_hide(\''+name+'\');show_filter();', 500);
}

function m3s(name) {
	if ( m3c && m3c != name ) layer_hide(m3c);
	m3c = name;
	layer_show(m3c);
	if (m1t) clearTimeout(m1t);
	if (m2t) clearTimeout(m2t);
	if (m3t) clearTimeout(m3t);
	m1t = 0;
	m2t = 0;
	m3t = 0;
}

function m3h(name) {
	m1t = setTimeout('layer_hide(\''+m1c+'\');show_filter();', 500);
	m2t = setTimeout('layer_hide(\''+m2c+'\');show_filter();', 500);
	m3t = setTimeout('layer_hide(\''+name+'\');show_filter();', 500);
}

function m4s(name) {
	if ( m4c && m4c != name ) layer_hide(m4c);
	m4c = name;
	layer_show(m4c);
	if (m1t) clearTimeout(m1t);
	if (m2t) clearTimeout(m2t);
	if (m3t) clearTimeout(m3t);
	if (m4t) clearTimeout(m4t);
	m1t = 0;
	m2t = 0;
	m3t = 0;
	m4t = 0;
}

function m4h(name) {
	m1t = setTimeout('layer_hide(\''+m1c+'\');show_filter();', 500);
	m2t = setTimeout('layer_hide(\''+m2c+'\');show_filter();', 500);
	m3t = setTimeout('layer_hide(\''+m3c+'\');show_filter();', 500);
	m4t = setTimeout('layer_hide(\''+name+'\');show_filter();', 500);
}

function m5s(name) {
	if ( m5c && m5c != name ) layer_hide(m5c);
	m5c = name;
	layer_show(m5c);
	if (m1t) clearTimeout(m1t);
	if (m2t) clearTimeout(m2t);
	if (m3t) clearTimeout(m3t);
	if (m4t) clearTimeout(m4t);
	if (m5t) clearTimeout(m5t);
	m1t = 0;
	m2t = 0;
	m3t = 0;
	m4t = 0;
	m5t = 0;
}

function m5h(name) {
	m1t = setTimeout('layer_hide(\''+m1c+'\');show_filter();', 500);
	m2t = setTimeout('layer_hide(\''+m2c+'\');show_filter();', 500);
	m3t = setTimeout('layer_hide(\''+m3c+'\');show_filter();', 500);
	m4t = setTimeout('layer_hide(\''+m4c+'\');show_filter();', 500);
	m5t = setTimeout('layer_hide(\''+name+'\');show_filter();', 500);
}

function hide_filter()
{
	elem = document.getElementById('st')
	if (elem)
	{
		elem.style.visibility = 'hidden';
	}
	elem = document.getElementById('sb')
	if (elem)
	{
		elem.style.visibility = 'hidden';
	}
}

function show_filter()
{
	elem = document.getElementById('st')
	if (elem)
	{
		elem.style.visibility = 'visible';
	}
	elem = document.getElementById('sb')
	if (elem)
	{
		elem.style.visibility = 'visible';
	}
}