// toggles visibility of selected item & swap text: show/hide details
function showHidePlus(id1, id2) {
	var elm = document.getElementById(id1).style;
	var link = document.getElementById(id2);
	var show = "show details";
	var hide = "hide details";
	
	if (elm.display == 'none') {
		elm.display = 'block';
		link.innerHTML=hide;
	} else {
		 elm.display = 'none';
		link.innerHTML=show;
	}
}