javascript - jQuery how to load a div from a other page using load -

i have little project need show items on 1 page other have little categorie can click on. pick attr("href"); , set page load. works.
how add <div> online load <div class="holder"></div> , not whole div?
function:

function setupcasesfilter()  {            j(".casemenu a").click(function(e) {         e.preventdefault();         j("ul.casesholder").load(j(this).attr("href"));      }); } 

where can add class inside attr("href")); ?

if want load specific div element url use way:

j("ul.casesholder").load(j(this).attr("href") + " .holder");  

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what seems me have .holder div on href page loading, can pass div's class name want load space ex. page.html .holder.