SetMarketingSourceCookieAndForm-Hubpost.js

    /*This script will handle a url input on a hubspot landing page such at http://hubpostlp.com/landing-page/?source=Newsletter10
    It will then take that url variable store it in a 90 day cookie and then insert it into the marketing_source fields on the hubspot
    forms. This script does account for multiple forms on the same page. */
    function getQueryParams(qs) {
    qs = qs.split('+').join(' ');

    var params = {},
        tokens,
        re = /[?&]?([^=]+)=([^&]*)/g;

    while (tokens = re.exec(qs)) {
        params[decodeURIComponent(tokens[1])] = decodeURIComponent(tokens[2]);
    }

    return params;
}
function createCookie(name, value, days) {
    var date, expires;
    if (days) {
        date = new Date();
        date.setTime(date.getTime()+(days*24*60*60*1000));
        expires = "; expires="+date.toGMTString();
    } else {
        expires = "";
    }
    document.cookie = name+"="+value+expires+"; path=/";
}
function getCookie(cname) {
    var name = cname + "=";
    var ca = document.cookie.split(';');
    for(var i=0; i<ca.length; i++) {
        var c = ca[i];
        while (c.charAt(0)==' ') c = c.substring(1);
        if (c.indexOf(name) == 0) return c.substring(name.length,c.length);
    }
    return "";
}
//
window.onload = function(){
var query = getQueryParams(document.location.search);
if (query.source !=undefined)
    {
        createCookie("source",query.source,90);
    }
var elementIndex;
for(elementIndex in document.getElementsByName("marketing_source"))
        {
        var elem = document.getElementsByName("marketing_source")[elementIndex];
        elem.value = getCookie("source");
        }
    }