if (document.images) {
	var leftNavPlumbing1on  = new Image();	leftNavPlumbing1on.src  = "/MungoBlobs/minus-link.gif";
	var leftNavPlumbing1off = new Image();	leftNavPlumbing1off.src = "/MungoBlobs/plus-link.gif";
	var leftNavPlumbing2on  = new Image();	leftNavPlumbing2on.src  = "/MungoBlobs/minus-link.gif";
	var leftNavPlumbing2off = new Image();	leftNavPlumbing2off.src = "/MungoBlobs/plus-link.gif";
	var leftNavPlumbing3on  = new Image();	leftNavPlumbing3on.src  = "/MungoBlobs/minus-link.gif";
	var leftNavPlumbing3off = new Image();	leftNavPlumbing3off.src = "/MungoBlobs/plus-link.gif";
	var leftNavPlumbing4on  = new Image();	leftNavPlumbing4on.src  = "/MungoBlobs/minus-link.gif";
	var leftNavPlumbing4off = new Image();	leftNavPlumbing4off.src = "/MungoBlobs/plus-link.gif";
	var leftNavPlumbing5on  = new Image();	leftNavPlumbing5on.src  = "/MungoBlobs/minus-link.gif";
	var leftNavPlumbing5off = new Image();	leftNavPlumbing5off.src = "/MungoBlobs/plus-link.gif";
	var leftNavPlumbing6on  = new Image();	leftNavPlumbing6on.src  = "/MungoBlobs/minus-link.gif";
	var leftNavPlumbing6off = new Image();	leftNavPlumbing6off.src = "/MungoBlobs/plus-link.gif";
}

function changeImages2() {
	if (document.images) {
		if (changeImages2.arguments[1] == leftNavPlumbing1on.src)
			document[changeImages2.arguments[0]].src = leftNavPlumbing1off.src;
		else
			document[changeImages2.arguments[0]].src = leftNavPlumbing1on.src;
	}
}