calc_array = new Array();
var calcul = 0;
var pas_ch = 0;
function $id(id) {
    return document.getElementById(id);
}
function f_calc(id, n) {
    if (n == 'ce') {
        init_calc(id);
    }
    else if (n == '=') {
        if (calc_array[id][0] != '=' && calc_array[id][1] != 1) {
            eval('calcul=' + calc_array[id][2] + calc_array[id][0] + calc_array[id][3] + ';');
            calc_array[id][0] = '=';
            $id(id + '_result').value = calcul;
            calc_array[id][2] = calcul;
            calc_array[id][3] = 0;
        }
    }
    else if (n == '+-') {
        $id(id + '_result').value = $id(id + '_result').value * (-1);
        if (calc_array[id][0] == '=') {
            calc_array[id][2] = $id(id + '_result').value;
            calc_array[id][3] = 0;
        }
        else {
            calc_array[id][3] = $id(id + '_result').value;
        }
        pas_ch = 1;
    }
    else if (n == 'nbs') {
        if ($id(id + '_result').value < 10 && $id(id + '_result').value > -10) {
            $id(id + '_result').value = 0;
        }
        else {
            $id(id + '_result').value = $id(id + '_result').value.slice(0, $id(id + '_result').value.length - 1);
        }
        if (calc_array[id][0] == '=') {
            calc_array[id][2] = $id(id + '_result').value;
            calc_array[id][3] = 0;
        }
        else {
            calc_array[id][3] = $id(id + '_result').value;
        }
    }
    else {
        if (calc_array[id][0] != '=' && calc_array[id][1] != 1) {
            eval('calcul=' + calc_array[id][2] + calc_array[id][0] + calc_array[id][3] + ';');
            $id(id + '_result').value = calcul;
            calc_array[id][2] = calcul;
            calc_array[id][3] = 0;
        }
        calc_array[id][0] = n;
    }
    if (pas_ch == 0) {
        calc_array[id][1] = 1;
    }
    else {
        pas_ch = 0;
    }
    document.getElementById(id + '_result').focus();
    return true;
}
function add_calc(id, n) {
    if (calc_array[id][1] == 1) {
        $id(id + '_result').value = n;
    }
    else {
        $id(id + '_result').value += n;
    }
    if (calc_array[id][0] == '=') {
        calc_array[id][2] = $id(id + '_result').value;
        calc_array[id][3] = 0;
    }
    else {
        calc_array[id][3] = $id(id + '_result').value;
    }
    calc_array[id][1] = 0;
    document.getElementById(id + '_result').focus();
    return true;
}
function init_calc(id) {
    $id(id + '_result').value = 0;
    calc_array[id] = new Array('=', 1, '0', '0', 0);
    document.getElementById(id + '_result').focus();
    return true;
}
function key_detect_calc(id, evt) {
    if ((evt.keyCode > 95) && (evt.keyCode < 106)) {
        var nbr = evt.keyCode - 96;
        add_calc(id, nbr);
    }
    else if ((evt.keyCode > 47) && (evt.keyCode < 58)) {
        var nbr = evt.keyCode - 48;
        add_calc(id, nbr);
    }
    else if (evt.keyCode == 107) {
        f_calc(id, '+');
    }
    else if (evt.keyCode == 109) {
        f_calc(id, '-');
    }
    else if (evt.keyCode == 106) {
        f_calc(id, '*');
    }
    else if (evt.keyCode == 111) {
        f_calc(id, '/');
    }
    else if (evt.keyCode == 110) {
        add_calc(id, '.');
    }
    else if (evt.keyCode == 190) {
        add_calc(id, '.');
    }
    else if (evt.keyCode == 188) {
        add_calc(id, '.');
    }
    else if (evt.keyCode == 13) {
        f_calc(id, '=');
    }
    else if (evt.keyCode == 46) {
        f_calc(id, 'ce');
    }
    else if (evt.keyCode == 8) {
        f_calc(id, 'nbs');
    }
    else if (evt.keyCode == 27) {
        f_calc(id, 'ce');
    }
    return true;
}