<!--
function onkeyup_digit(objControl)
{
    var value = objControl.value;
    var ch = null;
    var buffer = '';
    for (var i = 0; i < value.length; i++) {
        ch = value.substr(i, 1);
        if (ch == '0' ||
            ch == '1' ||
            ch == '2' ||
            ch == '3' ||
            ch == '4' ||
            ch == '5' ||
            ch == '6' ||
            ch == '7' ||
            ch == '8' ||
            ch == '9') {
            buffer += ch.toString();
        }
    }
    if (objControl.value != buffer) {
        objControl.value = buffer;
    }
}
//-->