var allClick = document.getElementById("all1");

// JS监听：http://github.crmeb.net/u/defu

allClick.addEventListener('click',function(){

var bolcheck = this.checked;

var obox=this.parentNode;

var lis=obox.children[2].getElementsByTagName("li");

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

debugger;

}

$("input[name=item]").each(function(){     

$(this).attr("checked", "checked");

})

$("#all2").attr("checked", "");

count();

},false);