function BoxMenu () {
	this.last = '';

	this.showBox=function(elem) {
		if (this.last != elem) {	
			
			$('#'+elem+':hidden').fadeIn('slow');
			
			this.last = elem;
		}
		$('#'+this.last+':visible').fadeOut('slow');
	};
	$("#box").css("cursor","pointer");
}