var headings = document.getElementsByTagName( "h1" );
var selectedHeading;
var classes;
for ( var n = 0; n < headings.length; n++ ) {
	if ( headings[n].className.match( /\bselected\b/ ) )
		selectedHeading = headings[n];
	newEvent( headings[n], "click", function( event ) {
		selectedHeading.className = selectedHeading.className.replace( /\bselected\b/, '' );
		selectedHeading.nextSibling.nextSibling.style.display = "none";
		selectedHeading = event.currentTarget;
		selectedHeading.className += " selected";
		selectedHeading.nextSibling.nextSibling.style.display = "block";
	} );
}