var COOKIE_NAME = "scroll";
 
$(document).ready(function () {
    // Check to see if the user already has the cookie set to scroll
    var scrollPosition = getCookiePosition(COOKIE_NAME);
    if (scrollPosition.length > 0) {
        // Scroll to the position of the last link clicked
        window.scrollTo(0, parseInt(scrollPosition, 10));
    }
 
    // Attach an overriding click event for each link
    // saveScrollPosition function can be called before the user is redirected.
    $("a.savel").each(function () {
        $(this).click(function () {
            saveScrollPosition($(this));
        });
    });
});
 
// Get the offset (height from top of page and the current page url) of the link element
// and save it in a cookie.
function saveScrollPosition(link) {
    var linkTop = link.offset().top;
    setCookie(COOKIE_NAME, "pos=" + linkTop + "&link=" + escape(window.location.pathname), 1);
}
 
//Trim whitespaces
function trim(str) {
   return str.replace(/^\s+|\s+$/g, '');
}
// Get cookie helper function
function getCookiePosition(name) {
    if (document.cookie.length > 0) {
        //Get the right cookie
        var cookies = document.cookie.split(";");
        for (var i = 0; i < cookies.length; i++) {
           
            if (trim(cookies[i].split("=")[0]) == COOKIE_NAME) {
                //Get the position of the & sign
                var pos = cookies[i].indexOf("&");
                if (pos > -1) {
                    //Get value
                    var scrollValue = cookies[i].split("=")[2].substring(0, cookies[i].split("=")[2].indexOf("&"));
                    var link = unescape(trim(cookies[i].split("=")[3]));
                    //if the link is the same as the current page, then assume user wants to go back to the same position
                    if (link == window.location.pathname) return scrollValue;
                }
                return "";
            }
        }
        return "";
    }
    return "";
}
 
//Method to create a new cookie
function createCookie(name, value, days) {
    if (days) {
        var date = new Date();
        date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
        var expires = "; expires=" + date.toGMTString();
    }
    else var expires = "";
    document.cookie = name + "=" + value + expires + "; path=/";
}
 
// Set cookie
function setCookie(name, value, expiredays) {
    //Remove all other cookies
    var cookies = document.cookie.split(";");
    for (var i = 0; i < cookies.length; i++) {
        if (trim(cookies[i].split("=")[0]) == COOKIE_NAME) {
            createCookie(trim(cookies[i].split("=")[0]), "", -1);
        }
    }
    //Set the new cookie
    createCookie(name, value, expiredays);
}