Get a location.hash and then do stuff

location-hash-retrieval.js

var url = window.location.hash.toString();
var anchor = '#' + url.split('#')[1];

//if a hash is in a url, show that div
if (url.match('#')) $(anchor).show();


// if the hash changes, show that div
$(window).bind('hashchange', function() {
	$(anchor).show();	
});

// this is simple and can be written more elegantly, but will get you where you need to go