var _selectHeight = 24;

var _forms = document.getElementsByTagName('form');
var inputs = new Array();
var selects = new Array();
var labels = new Array();
var radios = new Array();
var radioLabels = new Array();
var checkboxes = new Array();
var checkboxLabels = new Array();
var buttons = new Array();
var selects = new Array();
var all_selects = false;
var active_select = null;
var agt = navigator.userAgent.toLowerCase();
var isMac = is_mac();
var selectText = "please select";
var IN_CFORMS = true;

function is_mac() {
    if (navigator.appVersion.indexOf("Safari") != -1) {
        if (!window.getComputedStyle) {
            return true;
        }
    }

    return false;
}

function initCastomForms() {
    if (!document.getElementById) { return false; }
    getElements();
    separateElements();
    //replaceRadios();
    //replaceCheckboxes();
    replaceSelects();

    var _selects = document.getElementsByTagName('select');
    var _SelctClassName = [];
    if (_selects) {
        for (var i = 0; i < _selects.length; i++) {
            if (_selects[i].className != '' && _selects[i].className != 'outtaHere')
                _SelctClassName[i] = ' drop-' + _selects[i].className;
        }
        for (var i = 0; i < _SelctClassName.length; i++) {
            var _selectDrop = document.getElementById('optionsDiv' + i);
            if (_selectDrop) {
                if (_SelctClassName[i])
                    _selectDrop.className += _SelctClassName[i];
            }
        }
    }
}


// getting all the required elements
function getElements() {
    for (var nf = 0; nf < document.getElementsByTagName("form").length; nf++) {
        for (var nfi = 0; nfi < document.forms[nf].getElementsByTagName("input").length; nfi++) { inputs.push(document.forms[nf].getElementsByTagName("input")[nfi]); }
        for (var nfl = 0; nfl < document.forms[nf].getElementsByTagName("label").length; nfl++) { labels.push(document.forms[nf].getElementsByTagName("label")[nfl]); }
        for (var nfs = 0; nfs < document.forms[nf].getElementsByTagName("select").length; nfs++) { selects.push(document.forms[nf].getElementsByTagName("select")[nfs]); }
    }
}

// separating all the elements in their respective arrays
function separateElements() {
    var r = 0; var c = 0; var t = 0; var rl = 0; var cl = 0; var tl = 0; var b = 0;
    for (var q = 0; q < inputs.length; q++) {
        if (inputs[q].type == "radio") {
            radios[r] = inputs[q]; ++r;
            for (var w = 0; w < labels.length; w++) {
                if ((inputs[q].id) && labels[w].htmlFor == inputs[q].id) {
                    radioLabels[rl] = labels[w];
                    ++rl;
                }
            }
        }
        if (inputs[q].type == "checkbox") {
            checkboxes[c] = inputs[q]; ++c;
            for (var w = 0; w < labels.length; w++) {
                if ((inputs[q].id) && (labels[w].htmlFor == inputs[q].id)) {
                    checkboxLabels[cl] = labels[w];
                    ++cl;
                }
            }
        }
        if ((inputs[q].type == "submit") || (inputs[q].type == "button")) {
            buttons[b] = inputs[q]; ++b;
        }
    }
}

//replacing radio buttons
function replaceRadios() {
    for (var q = 0; q < radios.length; q++) {
        radios[q].className += " outtaHere";
        var radioArea = document.createElement("div");
        if (radios[q].checked) {
            radioArea.className = "radioAreaChecked";
        }
        else {
            radioArea.className = "radioArea";
        }
        radioArea.id = "myRadio" + q;
        radios[q].parentNode.insertBefore(radioArea, radios[q]);
        radios[q]._ra = radioArea;

        radioArea.onclick = new Function('rechangeRadios(' + q + ')');
        if (radioLabels[q]) {
            radioLabels[q].onclick = new Function('rechangeRadios(' + q + ')');
        }
    }
    return true;
}

//checking radios
function checkRadios(who) {
    var what = radios[who]._ra;
    for (var q = 0; q < radios.length; q++) {
        if ((radios[q]._ra.className == "radioAreaChecked") && (radios[q]._ra.nextSibling.name == radios[who].name)) {
            radios[q]._ra.className = "radioArea";
        }
    }
    what.className = "radioAreaChecked";
}

//changing radios
function changeRadios(who) {
    if (radios[who].checked) {
        for (var q = 0; q < radios.length; q++) {
            if (radios[q].name == radios[who].name) {
                radios[q].checked = false;
            }
            radios[who].checked = true;
            checkRadios(who);
        }
    }
}

//rechanging radios
function rechangeRadios(who) {
    if (!radios[who].checked) {
        for (var q = 0; q < radios.length; q++) {
            if (radios[q].name == radios[who].name) {
                radios[q].checked = false;
            }
            radios[who].checked = true;
            checkRadios(who);
        }
    }
}

//replacing checkboxes
function replaceCheckboxes() {
    for (var q = 0; q < checkboxes.length; q++) {
        checkboxes[q].className += " outtaHere";
        var checkboxArea = document.createElement("div");
        if (checkboxes[q].checked) {
            checkboxArea.className = "checkboxAreaChecked";
        }
        else {
            checkboxArea.className = "checkboxArea";
        }
        checkboxArea.id = "myCheckbox" + q;
        checkboxes[q].parentNode.insertBefore(checkboxArea, checkboxes[q]);
        checkboxes[q]._ca = checkboxArea;
        checkboxArea.onclick = checkboxArea.onclick2 = new Function('rechangeCheckboxes(' + q + ')');
        if (checkboxLabels[q]) {
            checkboxLabels[q].onclick = new Function('changeCheckboxes(' + q + ')');
        }

        checkboxes[q].onkeydown = checkEvent;
    }
    return true;
}

//checking checkboxes
function checkCheckboxes(who, action) {
    var what = checkboxes[who]._ca;
    if (action == true) {
        what.className = "checkboxAreaChecked";
        what.checked = true;
    }
    if (action == false) {
        what.className = "checkboxArea";
        what.checked = false;
    }
}

//changing checkboxes
function changeCheckboxes(who) {
    if (checkboxes[who].checked) {
        checkCheckboxes(who, false);
    }
    else {
        checkCheckboxes(who, true);
    }
}

//rechanging checkboxes
function rechangeCheckboxes(who) {
    var tester = false;
    if (checkboxes[who].checked == true) {
        tester = false;
    }
    else {
        tester = true;
    }
    checkboxes[who].checked = tester;
    checkCheckboxes(who, tester);
}

//check event
function checkEvent(e) {
    if (!e) var e = window.event;
    if (e.keyCode == 32) { for (var q = 0; q < checkboxes.length; q++) { if (this == checkboxes[q]) { changeCheckboxes(q); } } } //check if space is pressed
}


function replaceSelects() {
    var offsetWidth = 176;
    
    for (var q = 0; q < selects.length; q++) {
        if (!selects[q].replaced) {
            //Invisible elements don't have offsetWidth
            //However, we can safely assume in this case that the offsetWidth of the first select will be same for all others
            //if (q == 0)
            offsetWidth = selects[q].offsetWidth;

            selects[q]._number = q;
            
            //create and build div structure
            var selectArea = document.createElement("div");
            var left = document.createElement("span");
            left.className = "left";
            selectArea.appendChild(left);

            var disabled = document.createElement("span");
            disabled.className = "disabled";
            selectArea.appendChild(disabled);

            selects[q]._disabled = disabled;
            var center = document.createElement("span");
            var button = document.createElement("a");
            var text = document.createTextNode(selectText);
            center.id = "mySelectText" + q;

            //var stWidth = selects[q].offsetWidth;
            var stWidth = offsetWidth;
            selectArea.style.width = stWidth + "px";
            if (selects[q].parentNode.className.indexOf("type2") != -1) {
                button.href = "javascript:showOptions(" + q + ",true)";
            } else {
                button.href = "javascript:showOptions(" + q + ",false)";
            }
            button.className = "selectButton";
            selectArea.className = "selectArea";

            selectArea.className += " " + selects[q].className;
            selectArea.id = "sarea" + q;
            center.className = "center";
            center.appendChild(text);
            selectArea.appendChild(center);
            selectArea.appendChild(button);

            //hide the select field
            selects[q].className += " outtaHere";
            //insert select div
            selects[q].parentNode.insertBefore(selectArea, selects[q]);
            //build & place options div

            var optionsDiv = document.createElement("div");

            var optionsList = document.createElement("ul");
            optionsDiv.innerHTML += "<div class='select-top'><div></div></div>";
            optionsDiv.appendChild(optionsList);

            selects[q]._options = optionsList;

            optionsDiv.style.width = stWidth + "px";
            optionsDiv._parent = selectArea;

            optionsDiv.className = "optionsDivInvisible";
            optionsDiv.id = "optionsDiv" + q;


            populateSelectOptions(selects[q]);
            optionsDiv.innerHTML += "<div class='select-bottom'><div class='select-bottom-left'></div><div class='select-bottom-right'></div></div>";
            document.getElementsByTagName("body")[0].appendChild(optionsDiv);
            selects[q].replaced = true;
        }
        all_selects = true;
    }
}

//collecting select options
function populateSelectOptions(me) {
    me._options.innerHTML = "";

    for (var w = 0; w < me.options.length; w++) {

        var optionHolder = document.createElement('li');
        var optionLink = document.createElement('a');
        var optionTxt;
        if (me.options[w].title.indexOf('image') != -1) {
            optionTxt = document.createElement('img');
            optionSpan = document.createElement('span');
            optionTxt.src = me.options[w].title;
            optionSpan = document.createTextNode(me.options[w].text);
        } else {
            optionTxt = document.createTextNode(me.options[w].text);
        }

        optionLink.href = "javascript:showOptions(" + me._number + "); selectMe('" + me.id + "'," + w + "," + me._number + "); mySelectFunction" + (me._number + 1) + "(" + w + ");";
        if (me.options[w].title.indexOf('image') != -1) {
            optionLink.appendChild(optionTxt);
            optionLink.appendChild(optionSpan);
        } else {
            optionLink.appendChild(optionTxt);
        }
        optionHolder.appendChild(optionLink);
        me._options.appendChild(optionHolder);
        //check for pre-selected items
        if (me.options[w].selected) {
            selectMe(me.id, w, me._number);
        }
    }
    if (me.disabled) {
        me._disabled.style.display = "block";
    }
    else {
        me._disabled.style.display = "none";
    }
}

//selecting me
function selectMe(selectFieldId, linkNo, selectNo) {
    selectField = selects[selectNo];
    for (var k = 0; k < selectField.options.length; k++) {
        if (k == linkNo) {
            selectField.options[k].selected = true;
        }
        else {
            selectField.options[k].selected = false;
        }
    }

    //show selected option
    textVar = document.getElementById("mySelectText" + selectNo);
    var newText;
    var optionSpan;
    if (selectField.options[linkNo].title.indexOf('image') != -1) {
        newText = document.createElement('img');
        newText.src = selectField.options[linkNo].title;
        optionSpan = document.createElement('span');
        optionSpan = document.createTextNode(selectField.options[linkNo].text);
    } else {
        newText = document.createTextNode(selectField.options[linkNo].text);
    }
    if (selectField.options[linkNo].title.indexOf('image') != -1) {
        if (textVar.childNodes.length > 1) textVar.removeChild(textVar.childNodes[0]);
        textVar.replaceChild(newText, textVar.childNodes[0]);
        textVar.appendChild(optionSpan);
    } else {
        if (textVar.childNodes.length > 1) textVar.removeChild(textVar.childNodes[0]);
        textVar.replaceChild(newText, textVar.childNodes[0]);
    }
    
//    if (selectField.onchange && all_selects) {
//        eval(selectField.onchange());
//    }
}
//showing options
function showOptions(g) {
    _elem = document.getElementById("optionsDiv" + g);
    var divArea = document.getElementById("sarea" + g);
    _elem.style.width = divArea.style.width;
    
    if (active_select && active_select != _elem) {
        active_select.className = active_select.className.replace('optionsDivVisible', '');
        active_select.className += " optionsDivInvisible";
        active_select.style.height = "auto";
    }
    if (_elem.className.indexOf("optionsDivInvisible") != -1) {
        _elem.style.left = "-9999px";
        _elem.style.top = findPosY(divArea) + _selectHeight + 'px';
        _elem.className = _elem.className.replace('optionsDivInvisible', '');
        _elem.className += " optionsDivVisible";
        
        if (_elem.offsetHeight > 200)
        {
            _elem.style.height = "200px";
            _elem.style.overflowY = "scroll";
        }
        _elem.style.left = findPosX(divArea) + 'px';
        
        active_select = _elem;
        if (document.documentElement) {
            document.documentElement.onclick = hideSelectOptions;
        }
        else {
            window.onclick = hideSelectOptions;
        }
    }
    else if (_elem.className.indexOf("optionsDivVisible") != -1) {
        _elem.style.height = "auto";
        _elem.className = _elem.className.replace('optionsDivVisible', '');
        _elem.className += " optionsDivInvisible";
    }
}

function hideSelectOptions(e) {
    if (active_select) {
        if (!e) e = window.event;
        var _target = (e.target || e.srcElement);
        if (isElementBefore(_target, 'selectArea') == 0 && isElementBefore(_target, 'optionsDiv') == 0) {
            active_select.className = active_select.className.replace('optionsDivVisible', '');
            active_select.className = active_select.className.replace('optionsDivInvisible', '');
            active_select.className += " optionsDivInvisible";
            active_select = false;

            if (document.documentElement) {
                document.documentElement.onclick = function() { };
            }
            else {
                window.onclick = null;
            }
        }
    }
}

function isElementBefore(_el, _class) {
    var _parent = _el;
    do {
        _parent = _parent.parentNode;
    }
    while (_parent && _parent.className != null && _parent.className.indexOf(_class) == -1)

    if (_parent.className && _parent.className.indexOf(_class) != -1) {
        return 1;
    }
    else {
        return 0;
    }

}

function findPosY(obj) {
    var posTop = 0;
    while (obj.offsetParent) { posTop += obj.offsetTop; obj = obj.offsetParent; }
    return posTop;
}
function findPosX(obj) {
    var posLeft = 0;
    while (obj.offsetParent) { posLeft += obj.offsetLeft; obj = obj.offsetParent; }
    return posLeft;
}
window.onload = initCastomForms;