//If the link calling this function has an arrow beside, only pass in one parameter or true for 'arrow', otherwise specify false for 'arrow'
function dropDown( id, arrow ) {
	if ( arrow != false ) { arrow = true;}
	var element = document.getElementById( id );
	var img = document.getElementById( id + '_img' );
	if ( element.style.display == 'none' ) {
		element.style.display = 'block';
		if ( arrow ) {
			img.src = '../images/down.gif';
		}
	}
	else if ( arrow ) {
		element.style.display = 'none';
		img.src = 'images/over.gif';
	}
}