For use on blog post: http://normansolutions.co.uk/stamp-an-isams-report-with-the-current-username

iSAMSUserNameCookie.js

// Add this snippet to the ProcessForm() function in the reportingServicesReportSelection.asp
// located in "iSAMS\iSAMS.Framework\modules\StudentManagement\current"

//Get userName
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) != -1) return c.substring(name.length, c.length);
    }
    return "";
}
try {
    var userNameCookie = getCookie("iSAMS=UserCode");
    if (userNameCookie.length >= 1) {
        document.form1.userName.value = userNameCookie.substr(0, userNameCookie.indexOf(
            '&'));
    } else {
        document.form1.userName.value = "-";
    }
} catch (err) {
    console.log(err);
}
//End Get userName