I got this code running
$j('#nav_menu-2 li li a').bind('click', function(e){
//check when pagination link is clicked and stop its action.
e.preventDefault();
//get the href attribute
var link = $j(this).attr('href');
$j('#content').load(link + ' #content');
});
its working fine in chrome, ff, ie9 but the problems begin with ie8 and ie7.
I searched the web and tried this way
$j('#content').load(link + '?' + Math.random()*99999 + ' #content');
but its still not working, the content just doesn’t show.
this is the url to the site
just click the first blue box(arrow 1), and try to change the content the arrow 2 and arrow 3.

the problem was an extra unneeded
</div>tag inside the html code.All the modern browsers was able to handle this, but apparently ie8 and 7 just got lost that mess.