//<SCRIPT>

var Engines = (function () {
	var m_visibleMatrix,
		m_newVisibleMatrix;
	
	function toggleMatrix (obj) {
		m_newVisibleMatrix = $("#" + obj);
		if (m_visibleMatrix !== undefined) {
			$("#" + m_visibleMatrix).hide();
			m_newVisibleMatrix.slideDown('fast');
			m_visibleMatrix = obj;			
		} else {
			m_visibleMatrix = obj;
			m_newVisibleMatrix.slideDown('fast');
		}
	}
	
	return {
		displayMatrix: function (obj) {
			toggleMatrix(obj)
		}
	}
}());