I relied on jQuery to handle getting and setting scroll position in BeerCamp 2011, but after taking another look, its pretty easy to do with modern browsers.

// get scroll position
var x = window.scrollX,
    y = window.scrollY;

// set scroll position to x: 140, y: 700
window.scrollTo( 140, 700 );

You might see pageXOffset and pageYOffset, as these properties are the same as scrollX and scrollY. Old IE doesn’t support either.