This is really easy to accomplish. Firstly if you are using prototype you can use:
document.observe(”dom:loaded”, function() {
// when we load, get the string
var location=window.location.toString();
// search the string for a #
if(location.indexOf(”#”)!=-1) {
// work out the element
var element=location.substring((location.indexOf(”#”)+1));
new Effect.ScrollTo(element);
}
});