function leftTrim(sString) {
    while (sString.substring(0,1) == ' ') {
        sString = sString.substring(1, sString.length);
    }
    return sString;
}

function rightTrim(sString) {
    while (sString.substring(sString.length-1, sString.length) == ' ') {
        sString = sString.substring(0,sString.length-1);
    }
    return sString;
}

function trim(sString) {
    while (sString.substring(0,1) == ' ') {
        sString = sString.substring(1, sString.length);
    }
    while (sString.substring(sString.length-1, sString.length) == ' ') {
        sString = sString.substring(0,sString.length-1);
    }
    return sString;
}

function showDefaultTextInBox(textBox, textValue) {
    if (textBox.value == "") { textBox.value = textValue; }
}

function hideDefaultTextInBox(textBox, textValue) {
    if (textBox.value == textValue) { textBox.value = ""; }
}