var t;

function setCookie(c_name) {
    var date = new Date();
    date.setTime(date.getTime()+(900*1000));
    document.cookie = c_name+"=8sdj3nc7cg2bwlv0byhbthpjq233bt;expires="+date.toGMTString()+";path=/;domain="+location.host;
}

function c_rand(minV,maxV) {
    maxV++;
    var range = maxV - minV;
    var n = Math.floor(Math.random()*range) + minV;
    return n;
}

function generateSessionId() {
    session_id = "";
    session_id = session_id + String.fromCharCode(c_rand(97, 122));
    for(var i = 1; i < 30; i++) {
        if(c_rand(0, 1)) {
            session_id = session_id + String.fromCharCode(c_rand(97, 122));
        } else {
            session_id = session_id + String.fromCharCode(c_rand(48, 57));
        }
    }
    return session_id;
}

function setVal() {
    var sessId = generateSessionId();
    if(sessId) {
        setCookie(sessId);
        document.myform.elements["krv_val"].value = sessId;
    }
    t = setTimeout("hideVal()",5000);
}

function hideVal() {
    document.myform.elements["trv_val"].value = "lwe3gxcv82gkl7cdsnrtjklskwe4x";
    clearTimeout(t);
}