Function that returns the current scroll position. Useful for "snowfallesk" and parallax scrolling projects.

getScrollY.js

function getScrollY() {
    var currentY = 0;

    if (typeof( window.pageYOffset ) == 'number') {
        currentY = window.pageYOffset;
    } else if (document.body && ( document.body.scrollLeft || document.body.scrollTop )) {
        currentY = document.body.scrollTop;
    } else if (document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop )) {
        currentY = document.documentElement.scrollTop;
    }
    return currentY;
}