function showOnlyMe(el){
	hideAll();
	var i = 0;
	if (typeof el == 'object'){
		el = $(el).getParent();
		while (el.getPrevious()){
			el = el.getPrevious();
			i++;
		}
	}
	else{
		i = el;
	}
	document.getElements('div.cont')[i].removeClass('hidden').scrollIntoView();
}
function hideAll() {
	document.getElements('div.cont').addClass('hidden');
}