function initMenu(canshu,canshu2) {
  $(canshu+" ul").hide();
  //$(canshu+" li a").addClass("a_on");
  //$(canshu+" li ul li a").removeClass("a_on");
  if(canshu2!=""){$(canshu+" ul").filter(canshu2).show().prev().addClass("a_dangqian");}
  $(canshu+" li a").hover(
	function() {
      var checkElement = $(this).next();
	  dingshi=setTimeout(function(){
		if((checkElement.is("ul")) && (!checkElement.is(":visible"))) {
        $(canshu+" ul:visible").slideUp("normal");
        checkElement.slideDown("normal");
        return false;
        }},800)},function(){clearTimeout(dingshi);}
	);
  /*$(canshu+" li a").click(
    function() {
      var checkElement = $(this).next();
      if((checkElement.is("ul")) && (checkElement.is(":visible"))) {
        $(canshu+" ul:visible").slideUp("normal");
		return false;
        }
      if((checkElement.is("ul")) && (!checkElement.is(":visible"))) {
        $(canshu+" ul:visible").slideUp("normal");
        checkElement.slideDown("normal");
        return false;
        }
      }
    );*/
  }