var interface = {
	mh_id:'s_',
	showMenu: function(id, mleft, img){
		document.getElementById('s_'+id).style.marginLeft = mleft + 'px';
		document.getElementById('m_' + id).src = img;
		$('#s_' + id).show();
	},
	hideMenu: function(id, img){
		document.getElementById('m_' + id).src = img;
		$('#s_' + id).hide();
	}
}