function mat_show() {
	document.getElementById('materials').style.visibility = 'visible';
	document.getElementById('systems').style.visibility = 'hidden';
	document.getElementById('materials').style.left = matPosLeft + 'px';
	document.getElementById('materials').style.top = posTop + 'px';
}

function sys_show() {
	document.getElementById('systems').style.visibility = 'visible';
	document.getElementById('materials').style.visibility = 'hidden';
	document.getElementById('systems').style.left = sysPosLeft + 'px';
	document.getElementById('systems').style.top = posTop + 'px';
}

function mat_hide() {
	document.getElementById("materials").style.visibility = "hidden";
}

function sys_hide() {
	document.getElementById("systems").style.visibility = "hidden";
}

function MM_findObj(n, d) { //v4.0
	var p, i, x;
	if (!d)
		d = document;
	if ((p = n.indexOf("?")) > 0 && parent.frames.length) {
		d = parent.frames[n.substring(p + 1)].document;
		n = n.substring(0, p);
	}
	if (!(x = d[n]) && d.all)
		x = d.all[n];
	for (i = 0; !x && i < d.forms.length; i++)
		x = d.forms[i][n];
	for (i = 0; !x && d.layers && i < d.layers.length; i++)
		x = MM_findObj(n, d.layers[i].document);
	if (!x && (document.getElementById(n) != null))
		x = document.getElementById(n);
	return x;
}

function MM_showHideLayers() { //v3.0
	var i, p, v, obj, args = MM_showHideLayers.arguments;
	for (i = 0; i < (args.length - 2); i += 3) {
		if ((obj = MM_findObj(args[i])) != null) {
			v = args[i + 2];
			if (obj.style) {
				obj = obj.style;
				v = (v == 'show') ? 'visible' : (v = 'hide') ? 'hidden' : v;
			}
			obj.visibility = v;
		}
	}
	// posLeft
	if (document.getElementById("Layer2") != null)
		document.getElementById("Layer2").style.left = posLeft + 'px';
	if (document.getElementById("Layer3") != null)
		document.getElementById("Layer3").style.left = posLeft + 'px';
	if (document.getElementById("Layer4") != null)
		document.getElementById("Layer4").style.left = posLeft + 'px';
	if (document.getElementById("Layer5") != null)
		document.getElementById("Layer5").style.left = posLeft + 'px';
	if (document.getElementById("Layer6") != null)
		document.getElementById("Layer6").style.left = posLeft + 'px';
	if (document.getElementById("Layer7") != null)
		document.getElementById("Layer7").style.left = posLeft + 'px';
	if (document.getElementById("Layer8") != null)
		document.getElementById("Layer8").style.left = posLeft + 'px';
	if (document.getElementById("Layer9") != null)
		document.getElementById("Layer9").style.left = posLeft + 'px';

	// posTop
	if (document.getElementById("Layer2") != null)
		document.getElementById("Layer2").style.top = posTop + 'px';
	if (document.getElementById("Layer3") != null)
		document.getElementById("Layer3").style.top = (posTop + 24) + 'px';
	if (document.getElementById("Layer4") != null)
		document.getElementById("Layer4").style.top = (posTop + 48) + 'px';
	if (document.getElementById("Layer5") != null)
		document.getElementById("Layer5").style.top = (posTop + 72) + 'px';
	if (document.getElementById("Layer6") != null)
		document.getElementById("Layer6").style.top = (posTop + 96) + 'px';
	if (document.getElementById("Layer7") != null)
		document.getElementById("Layer7").style.top = (posTop + 120) + 'px';
	if (document.getElementById("Layer8") != null)
		document.getElementById("Layer8").style.top = (posTop + 148) + 'px';
	if (document.getElementById("Layer9") != null)
		document.getElementById("Layer9").style.top = (posTop + 172) + 'px';

}

self.onError = null;