var greyed = [
    ['query', 'word/postcode'],
    ['email', 'your email']
    ]


// http://www.scottandrew.com/weblog/articles/cbs-events
function addEvent(obj, evType, fn){
    if (obj.addEventListener){
        obj.addEventListener(evType, fn, true);
        return true;
    } else if (obj.attachEvent){
        var r = obj.attachEvent("on"+evType, fn);
        return r;
    } else {
        return false;
    }
}

function fadein(thi) {
    id = thi.id
    for (var j = 0; j < greyed.length; j++) {
        if (greyed[j][0] == id && greyed[j][1] == thi.value) {
            thi.style.color = '#000000';
            thi.value = '';
        }
    }
}
function fadeout(thi) {
    id = thi.id
    for (var j = 0; j < greyed.length; j++) {
        if (greyed[j][0] == id && thi.value == '') {
            thi.style.color = '#999999';
            thi.value = greyed[j][1];
        }
    }
}

addEvent(window, 'load', greyOutInputs);
function greyOutInputs() {
    if (!document) return
    if (document.getElementById) {
        for (var j = 0; j < greyed.length; j++) {
            d = document.getElementById(greyed[j][0])
            if (d && d.value == '') d.value = greyed[j][1]
            if (d && d.value == greyed[j][1]) d.style.color = '#999999'
        }

    }
}