var appName = navigator.appName;
var IE = 'Microsoft Internet Explorer';
var isIe = appName == IE;

String.prototype.trim = new Function("return this.replace(/^\\s+|\\s+$/g,'')");

function exploreObject(obj) {
    debugWindow = window.open('', 'debugWindow', 'menubar=no,width=500,height=350, scrollBars=yes');
    debugWindow.document.write('<table>');
    for (var property in obj) {
        debugWindow.document.write('<tr><td>' + property + '</td><td>' + obj[property] + '</td></tr>');
    }
    debugWindow.document.write('</table>');
    debugWindow.document.close();
}



//Funkcja sprawdza czy ktorakolwiek z opcji radiogroup zostala wybrana
function isRadioSelected(radio){
    for (var i = 0; i < radio.length; i++){
        if (radio[i].checked) {
            return true;
        }
    }
    return false;
}

function unimplemented(functionName) {
    window.alert('Funkcja ' + functionName + ' nie jest jeszcze zaimplementowana!');
}

//wraper dla skrocenia kodu
function getElem(id) {
    return document.getElementById(id);
}

function reportError(functionName, e) {
    window.alert('Error in ' + functionName + ' function!');
    throw e;
}

function hide(id) {
    document.getElementById(id).style.display = 'none';
}

function show(id) {
    var field = document.getElementById(id);
    if (isIe) {
        field.style.display = 'inline';
    } else {
        var display = 'inline';
        if (field.tagName == 'TD') {
            display = 'table-cell';
        } else if (field.tagName == 'TR') {
            display = 'table-row';
        }
        field.style.display = display;
    }
}

function findCity(msg) {
    var field = document.getElementById('regionName');
    field.value = field.value.trim();
    
    if (field.value.length > 2) {
        document.getElementById('findCityForm').submit();
        return true;
    } else {
        alert(msg);
        return false;
    }
}

function findPosX(obj) {
   var curleft = 0;
   if (obj.offsetParent) {
      while (obj.offsetParent) {
         curleft += obj.offsetLeft;
         curleft -= obj.scrollLeft;
         obj = obj.offsetParent;
      }
   } else if (obj.x) curleft += obj.x;
   return curleft;
}

function findPosY(obj) {
   var curtop = 0;
   if (obj.offsetParent) {
      while (obj.offsetParent) {
         curtop += obj.offsetTop;
         curtop -= obj.scrollTop;
         obj = obj.offsetParent;
      }
   } else if (obj.y) curtop += obj.y;
   
   return curtop;
}

function round(value, digits) {
    try {
        var multiple = Math.pow(10, digits);
        return Math.round(value * multiple) / multiple;
    } catch (e) {
        reportError('round', e);
    }
}

function roundAmount(value) {
    try {
        value = round(value, 2);
        var decimal = Math.floor(value);
        var fraction = Math.round((value - decimal) * 100);
        var result = decimal + ".";
    
        if (fraction == 0) {
            result += '00';
        } else {
            if (fraction > 0 && fraction < 10) {
                result += '0' + fraction;
            } else {
                result += fraction;
            }
        }
    
        return result;
    } catch (e) {
        reportError('roundAmount', e);
    }
}