// not animated collapse/expand
 function togglePannelStatus(content){
        var expand = (content.style.display=="none");
        content.style.display = (expand ? "block" : "none");
		
        var chevron = content.parentNode
            .firstChild.childNodes[1].childNodes[0];
        chevron.src = chevron.src
            .split(expand ? "expand.gif" : "collapse.gif")
            .join(expand ? "collapse.gif" : "expand.gif");
    }