load just a section of a page

load just a section of a page

hi, I am trying to load the contents of a div on another page into the contents of the div on a new page, I can't just load the the full page into the div as it has stuff I don't want displaying on the new page.

for example, my page setup is
a div column with links and another column with data the links can be loaded from a drop down menu at the top or the first column I mentioned on each page.

what I want is that if you load the page from the top nav bar it loads the entire new page, if you load the page from the side links it loads the content of right column from the requested page into the content of the right column of the exisitng page, not changing the links which are in the left column

so what I need is

var toLoad = ((Something here to say it is from another page)).$("#right_div").innerHTML;
$("#right_div").append(toLoad);