function getWindowHeight() {
    var windowHeight = 0;
    if (typeof(window.innerHeight) == 'number') {
        windowHeight = window.innerHeight;
    } else {
        if (document.documentElement && document.documentElement.clientHeight) {
            windowHeight = document.documentElement.clientHeight;
        } else {
            if (document.body && document.body.clientHeight) {
                windowHeight = document.body.clientHeight;
            }
        }
    }
    return windowHeight;
}

function getWindowWidth() {
    var windowWidth = 0;
    if (typeof(window.innerWidth) == 'number') {
        windowWidth = window.innerWidth;
    } else {
        if (document.documentElement && document.documentElement.clientWidth) {
            windowWidth = document.documentElement.clientWidth;
        } else {
            if (document.body && document.body.clientWidth) {
                windowWidth = document.body.clientWidth;
            }
        }
    }
    return windowWidth;
}

function getAbsTop(e) {
    var c = e;
    var t = 0;
    while (c.offsetParent) {
      t += c.offsetTop;
      c = c.offsetParent;
    }
    return t;
}

function getAbsLeft(e) {
    var c = e;
    var l = 0;
    while (c.offsetParent) {
      l += c.offsetLeft;
      c = c.offsetParent;
    }
    return l;
}