var ns4 = document.layers;
var ns6 = document.getElementById && !document.all;
var ie4 = document.all;
 
function togglePane(paneName, imgOn, imgOff) {
 
	var paneImage;
	var paneDiv;
	if (ns4) paneImage = eval("document." + paneName + "_img");
	else if(ns6) paneImage = document.getElementById(paneName + "_img");
	else if(ie4) paneImage = document.all(paneName + "_img");
	if (ns4) paneDiv = eval("document." + paneName);
	else if(ns6) paneDiv = document.getElementById(paneName);
	else if(ie4) paneDiv = document.all(paneName);
 
	if (paneDiv.style.display == 'none') {
		paneDiv.style.display = '';
		paneImage.src = imgOn;
	} else {
		paneDiv.style.display = 'none';
		paneImage.src = imgOff;
	}
 
}