function accordeonMenuClick(elID) {
	var el = $(elID);
	if (!el) return false;
	if (el.select('div').length==0) return; /* if there are no subs - do nothing */

	if (el.hasClassName('level0')) /* if this level is a top-level - toggle topHighlightClass */
		el.toggleClassName('level0high');

	el.siblings().each( function(siblingEl) { /* scroll through list of divs of the same DOM-level */
		if (siblingEl.hasClassName('level0high')) /* if it is higlighted - remove it */
			siblingEl.removeClassName('level0high');
		siblingEl.immediateDescendants().each( function (thEl) { /* scroll thorugh all subs of div of same DOM-level and hide them */
			if (thEl.tagName=='DIV') {
				thEl.addClassName('hidden');
				thEl.removeClassName('visible');
			}
		} );
	} );

	el.immediateDescendants().each( function (thEl) { /* scroll through sub divs of this and show them */
		if (thEl.tagName=='DIV') {
			thEl.toggleClassName('hidden');
			thEl.toggleClassName('visible');
		}
	} );
}