aniview Entering Viewport

EnteringViewport.js

/**
 * returns boolean representing whether element's top is coming into bottom of viewport
 *
 * @param HTMLDOMElement element the current element to check
 */
function EnteringViewport(element) {
    var elementOffset = $(element).offset();
    var elementTop = elementOffset.top + $(element).scrollTop();
    var elementBottom = elementOffset.top + $(element).scrollTop() + $(element).height();
    var viewportBottom = $(window).scrollTop() + $(window).height();
    return (elementTop < (viewportBottom - settings.animateThreshold)) ? true : false;
}