function $() {

  var elements = new Array();

  for (var i = 0; i < arguments.length; i++) {

    var element = arguments[i];

    if (typeof element == 'string') element = document.getElementById(element);

    if (arguments.length == 1) return element;

    elements.push(element);

  }

  return elements;

}

var tID=0;



function c(ID) {

	var dds = $('menu').getElementsByTagName('dd');

	for(var i=0;i<dds.length;i++) {

		dds[i].className = dds[i] == ID ? 'dd_on' : '';

		if(dds[i] == ID) $(ID).firstChild.blur();

	}

}



function m(ID) {

	var dls = $('m_3').getElementsByTagName('dl');

	for(var i=0;i<dls.length;i++) {

		var dds = $(dls[i].id).getElementsByTagName('dd');

		for(var j=0;j<dds.length;j++) {

			dds[j].style.display = dls[i].id == 'dl_'+ID ? dds[j].style.display == 'none' ? '' : 'none' : 'none';

		}

	}

}