if (location.href.indexOf("extid=") > -1) {
    var curLocale = location.href;
    var cookieStart = parseInt(location.href.indexOf("extid="))+6;
    var campaignName = "";
    campaignName = curLocale.substring(cookieStart);

    createCookie('GCGHcampaign', campaignName);

    //OLD STUFF
    //var exdate = new Date();
    //exdate.setDate(exdate.getDate() + 180);

    /*    
	alert(campaignName);
    document.cookie = "GCGHcampaign=''; domain=www.grandchallenges.org; expires=-1;";
    alert("Campaign: " + GetCookie("GCGHcampaign"));
    document.cookie = "GCGHcampaign=" + escape(campaignName) + ";domain=www.grandchallenges.org; expires=180;";
    alert("Campaign: " + GetCookie("GCGHcampaign"));
    */
    
    //eraseCookie('GCGHcampaign');
    //alert("Campaign: " + readCookie("GCGHcampaign"));
    //alert("Campaign: " + readCookie("GCGHcampaign"));
}



function createCookie(name, value, days) {
    //alert("Create Cookie:" + name + " = " + value);
    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=/";
}

function readCookie(name) {
    var nameEQ = name + "=";
    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, c.length);
        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
    }
    return null;
}

function eraseCookie(name) {
    createCookie(name, " ", -1);
}