function log(text) {
    if (empty(text)) return;
    var lw = $("#logwin");
    if (lw[0]) {
        lw.append(text + "\r\n");
        lw.scrollTop(lw[0].scrollHeight);
    }
    return text;
}

function showLogWin(show) {
    var lw = $("#logwin");
    if (show && !lw[0]) $(document.body).append('<textarea style="position:fixed;left:0px;bottom:0px;width:100%; height:200px;" id="logwin"></textarea>');
    else if (lw[0]) lw.remove();
}

function toggleLogWin() {
    var lw = $("#logwin");
    if (!lw[0]) $(document.body).append('<textarea style="position:fixed;left:0px;bottom:0px;width:100%; height:200px;" id="logwin"></textarea>');
    else if (lw[0]) lw.remove();
}

function onChangeInput(inp) {

    if (inp.className == "editField")
        inp.value = inp.value.replace(/,/g, ".");
    
    if (inp.name == "k1_grad") {
        var f = parseFloat(inp.value);
        if (!isNaN(f))
            orderform.k2_grad.value = f <= 90 ? f + 90 : f - 90;
    }
    else if (inp.name == "k2_grad") {
        var f = parseFloat(inp.value);
        if (!isNaN(f))
            orderform.k1_grad.value = f <= 90 ? f + 90 : f - 90;
    }
    else if (inp.name == "os_k1_grad") {
        var f = parseFloat(inp.value);
        if (!isNaN(f))
            orderform.os_k2_grad.value = f <= 90 ? f + 90 : f - 90;
    }
    else if (inp.name == "os_k2_grad") {
        var f = parseFloat(inp.value);
        if (!isNaN(f))
            orderform.os_k1_grad.value = f <= 90 ? f + 90 : f - 90;
    }
}

function onChangeSelect(sel) {
    if (sel.name == "inzision_typ") {
        var field = document.getElementById("ind_zyl_grad");
        var value = sel.options[sel.selectedIndex].value;
        if (value == "1" || value == "2") {
            field.disabled = true;
            field.className = "disField";
        } else {
            field.disabled = false;
            field.className = "editField";
        }
    }
    else if (sel.name == "os_inzision_typ") {
        var field = document.getElementById("os_ind_zyl_grad");
        var value = sel.options[sel.selectedIndex].value;
        if (value == "1" || value == "2") {
            field.disabled = true;
            field.className = "disField";
        } else {
            field.disabled = false;
            field.className = "editField";
        }
    }
    else if (sel.name == "iol_staerke") {
        document.getElementById("edit_zyl_staerke_dpt").value = '';
    }
    else if (sel.name == "lens_type") {
        document.getElementById("iol_staerke").value = '';
        document.getElementById("edit_zyl_staerke_dpt").value = '';
    }
    else if (sel.name == "os_iol_staerke") {
        document.getElementById("os_edit_zyl_staerke_dpt").value = '';
    }
    else if (sel.name == "os_lens_type") {
        document.getElementById("os_iol_staerke").value = '';
        document.getElementById("os_edit_zyl_staerke_dpt").value = '';
    }
}
function init_past_sub() { }
function init_doc_page() { }

function check_textfield(id) {
    var inp = document.getElementById(id);
    var is_empty = inp.value == null || inp.value == "";
    inp.style.backgroundColor = is_empty == false ? "" : "red";
    return !is_empty;
}

function show_print_view(inp) {
    //orderform.action = 'IOLPrintViewOrder.php';
    orderform.action = 'pdf/OrderPDF.php';
    orderform.target = '_blank';
    check_and_submit(inp);
    orderform.target = '_self';
}

function show_doc_print_view(inp) {
    //orderform.action = 'IOLPrintViewDocs.php';
    orderform.action = 'pdf/DocsPDF.php';
    orderform.target = '_blank';
    check_and_submit(inp);
    orderform.target = '_self';
}

function show_doc_print_view_big(inp) {
    //orderform.action = 'IOLPrintViewBig.php';
    orderform.action = 'pdf/BigPDF.php';
    orderform.target = '_blank';
    check_and_submit(inp);
    orderform.target = '_self';
}

var removeQueryFields = function (url) {
    var fields = [].slice.call(arguments, 1).join('|'),
    parts = url.split( new RegExp('[&?](' + fields + ')=[^&]*') ),
    length = parts.length - 1;
    return parts[0];// + '?' + (length ? parts[length].slice(1) : '');
}

function set_lang(lang) {
    orderform["lang"].value = lang;
    orderform.action = removeQueryFields(window.location.href, "lang");
    if (orderform.tod_ms_date) orderform.tod_ms_date.value = "";
    if (orderform.pat_optermin) orderform.pat_optermin.value = "";
    if (orderform.os_pat_optermin) orderform.os_pat_optermin.value = "";
    orderform.submit();
}

function new_patient() {
    var keep =
    new Array(
              "nachname", "vorname", "strasse", "plz", "ort", "telefon",
              "lie_name", "lie_vorname", "lie_strasse", "lie_plz", "lie_ort", "lie_telefon",
              "bst_telefon", "bst_email",
              "unters_vorname", "unters_name",
              "opar_vorname", "opar_name", "opar_institution", "has_lie", "lang"
              );
    
    var inps = document.getElementsByTagName("input");
    for (var i=0; i<inps.length; i++) {
        var inp = inps[i];
        if ($.inArray(inp.name, keep) == -1)
            inp.disabled = true;
    }
    
    var inps = document.getElementsByTagName("select");
    for (var i=0; i<inps.length; i++) {
        var inp = inps[i];
        if ($.inArray(inp.name, keep) == -1)
            inp.disabled = true;
    }
    
    orderform.action = "IOLCalculator.php";
    orderform.submit();
}

if (!String.prototype.format) {
    String.prototype.format = function() {
        var args = arguments;
        return this.replace(/{(\d+)}/g, function(match, number) {
                            return typeof args[number] != 'undefined'
                            ? args[number]
                            : match
                            ;
                            });
    };
}

function empty(data) {
    if(typeof(data) == 'number' || typeof(data) == 'boolean') {
        return false;
    }
    if(typeof(data) == 'undefined' || data === null) {
        return true;
    }
    if(typeof(data.length) != 'undefined') {
        return data.length == 0;
    }
    var count = 0;
    for(var i in data) {
        if(data.hasOwnProperty(i)) {
            count ++;
        }
    }
    return count == 0;
}

function check_date(string, showDialog) {

    var lang = "en";
    
    if (typeof(showDialog) === 'undefined') showDialog = true;
    
    // Regular expression used to check if date is in correct format
    var pattern =
        lang == "de" ?
        /[0-3][0-9].(0|1)[0-9].(19|20)[0-9]{2}/ :
        /(0|1)[0-9]-[0-3][0-9]-(19|20)[0-9]{2}/ ;
    if(string.match(pattern))
    {
        var date_array = string.split(lang == "de" ? '.' : '-');
        var day = date_array[lang == "de" ? 0 : 1];
        
        // Attention! Javascript consider months in the range 0 - 11
        var month = date_array[lang == "de" ? 1 : 0] - 1;
        var year = date_array[2];
        
        // This instruction will create a date object
        source_date = new Date(year,month,day);
        
        if(day != source_date.getDate())
        {
            if (showDialog) alert(unescape('Day format is not valid! (format: mm-dd-yyyy)'));
            return false;
        }
        
        if(month != source_date.getMonth())
        {
            if (showDialog) alert(unescape('Month format is not valid! (format: mm-dd-yyyy)'));
            return false;
        }
        
        if(year != source_date.getFullYear())
        {
            if (showDialog) alert(unescape('Year is not valid! (format: mm-dd-yyyy)'));
            return false;
        }

        return source_date;
    }
    else
    {
        if (showDialog) alert(unescape('Date format is not valid! (format: mm-dd-yyyy)'));
        return false;
    }
}

function button_hover(b, hover) {
    var img = b.getElementsByTagName("img");
    add = hover ? "_hl" : "";
    img[0].src = "Images/bleft"+add+".png";
    img[1].src = "Images/bback"+add+".png";
    img[2].src = "Images/bright"+add+".png";
}	

function isIE () {
    var myNav = navigator.userAgent.toLowerCase();
    return (myNav.indexOf('msie') != -1) ? parseInt(myNav.split('msie')[1]) : false;
}

//////////////////////////////////////////////////////////////////////////////////////////////////////////
// IE8 workaround

var t_x, t_y, lr_x, lr_y, lg_x, lg_y, i_x, i_y;
var t_x_os, t_y_os, lr_x_os, lr_y_os, lg_x_os, lg_y_os, i_x_os, i_y_os;
function store(praef) {
    var e = document.getElementById(praef + "toric");
    if (e != null) {
        t_x = e.style.left;
        t_y = e.style.top;
    }
    
    e = document.getElementById(praef + "line_red");
    if (e != null) {
        lr_x = e.style.left;
        lr_y = e.style.top;
    }
    
    e = document.getElementById(praef + "line_green");
    if (e != null) {
        lg_x = e.style.left;
        lg_y = e.style.top;
    }
    
    e = document.getElementById(praef + "inzision");
    if (e != null) {
        i_x = e.style.left;
        i_y = e.style.top;
    }
    
    e = document.getElementById("os_toric");
    if (e != null) {
        t_x_os = e.style.left;
        t_y_os = e.style.top;
    }
    
    e = document.getElementById("os_line_red");
    if (e != null) {
        lr_x_os = e.style.left;
        lr_y_os = e.style.top;
    }
    
    e = document.getElementById("os_line_green");
    if (e != null) {
        lg_x_os = e.style.left;
        lg_y_os = e.style.top;
    }
    
    e = document.getElementById("os_inzision");
    if (e != null) {
        i_x_os = e.style.left;
        i_y_os = e.style.top;
    }
}

function restore(praef) {
    var e = document.getElementById(praef + "toric");
    if (e != null) {
        e.style.position = "absolute";
        e.style.left = t_x;
        e.style.top = t_y;
    }
    
    e = document.getElementById(praef + "line_red");
    if (e != null) {
        e.style.position = "absolute";
        e.style.left = lr_x;
        e.style.top = lr_y;
    }
    
    e = document.getElementById(praef + "line_green");
    if (e != null) {
        e.style.position = "absolute";
        e.style.left = lg_x;
        e.style.top = lg_y;
    }
    
    e = document.getElementById(praef + "inzision");
    if (e != null) {
        e.style.position = "absolute";
        e.style.left = i_x;
        e.style.top = i_y;
    }
    
    e = document.getElementById("os_toric");
    if (e != null) {
        e.style.position = "absolute";
        e.style.left = t_x_os;
        e.style.top = t_y_os;
    }
    
    e = document.getElementById("os_line_red");
    if (e != null) {
        e.style.position = "absolute";
        e.style.left = lr_x_os;
        e.style.top = lr_y_os;
    }
    
    e = document.getElementById("os_line_green");
    if (e != null) {
        e.style.position = "absolute";
        e.style.left = lg_x_os;
        e.style.top = lg_y_os;
    }
    
    e = document.getElementById("os_inzision");
    if (e != null) {
        e.style.position = "absolute";
        e.style.left = i_x_os;
        e.style.top = i_y_os;
    }
}

//////////////////////////////////////////////////////////////////////////////////////////////////////////


function check_email(email) {
    var re = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
    return re.test(email);
}