/*

CUSTOM FORM ELEMENTS

Created by Ryan Fait
www.ryanfait.com

The only thing you need to change in this file is the following
variables: checkboxHeight, radioHeight and selectWidth.

Replace the first two numbers with the height of the checkbox and
radio button. The actual height of both the checkbox and radio
images should be 4 times the height of these two variables. The
selectWidth value should be the width of your select list image.

You may need to adjust your images a bit if there is a slight
vertical movement during the different stages of the button
activation.

Visit http://ryanfait.com/ for more information.

*/

var checkboxHeight = "16";
var radioHeight = "16";
var selectWidth = "190";

/* No need to change anything after this */

document.write('<style type="text/css">input.styled {position:absolute; opacity: 0; left:-2px; top:-2px; filter: alpha(opacity=0); } select.styled { position: relative; opacity: 0; filter: alpha(opacity=0); z-index: 5; }</style>');

var Custom = {
    init: function() {
        var inputs = document.getElementsByTagName("input"), span = Array(), textnode, option, active;
        for (a = 0; a < inputs.length; a++) {
            if (inputs[a].type == "checkbox" || inputs[a].type == "radio") {
                if (inputs[a].className != "styled") {
                    inputs[a].className = "styled"
                }
                span[a] = document.createElement("span");
                span[a].className = inputs[a].type;

                if (inputs[a].type == "checkbox") {
                    inputs[a].parentNode.className = inputs[a].parentNode.className + " mo-checkbox";
                }

                if (inputs[a].checked == true) {
                    if (inputs[a].type == "checkbox") {
                        inputs[a].parentNode.className = inputs[a].parentNode.className + " checked";
                        if (inputs[a].disabled) {
                            position = "0 -" + (checkboxHeight * 5) + "px";
                        }
                        else {
                            position = "0 -" + (checkboxHeight * 1) + "px";
                        }
                        span[a].style.backgroundPosition = position;
                    } else {
                        if (inputs[a].disabled) {
                            position = "0 -" + (radioHeight * 5) + "px";
                        }
                        position = "0 -" + (radioHeight * 1) + "px";
                        span[a].style.backgroundPosition = position;
                    }
                }
                else {
                    if (inputs[a].disabled) {
                        if (inputs[a].type == "checkbox") {
                            position = "0 -" + (checkboxHeight * 4) + "px";
                            span[a].style.backgroundPosition = position;
                        } else {
                            position = "0 -" + (radioHeight * 4) + "px";
                            span[a].style.backgroundPosition = position;
                        }
                    }
                }
                var img_unchecked = document.createElement("img");
                img_unchecked.className = "unchecked";
                img_unchecked.src = "../images/checkbox_unchecked.png";

                var img_checked = document.createElement("img");
                img_checked.className = "checked";
                img_checked.src = "../images/checkbox_checked.png";

                inputs[a].parentNode.insertBefore(span[a], inputs[a]);
                
                inputs[a].parentNode.insertBefore(img_unchecked, inputs[a].nextSibling);
                inputs[a].parentNode.insertBefore(img_checked, inputs[a].nextSibling);
            
                /*inputs[a].onclick = Custom.clear;*/
                $(inputs[a]).click(Custom.clear);
                inputs[a].onfocus = Custom.focus;
                inputs[a].onblur = Custom.blur;
                $(span[a]).click(Custom.check);
                span[a].onmouseover = Custom.highlight;
                span[a].onmouseout = Custom.clear;
                inputs[a].onmouseover = Custom.highlight;
                inputs[a].onmouseout = Custom.clear;
                document.onmouseup = Custom.clear;
            }
        }
        inputs = document.getElementsByTagName("select");
        for (a = 0; a < inputs.length; a++) {
            if (inputs[a].className.match(/styled/)) {
                option = inputs[a].getElementsByTagName("option");
                textnode = document.createTextNode("");
                for (b = 0; b < option.length; b++) {
                    if (option[b].selected == true && option[b].childNodes.length > 0) {
                        textnode = document.createTextNode(option[b].childNodes[0].nodeValue);
                    }
                }
                span[a] = document.createElement("span");
                span[a].className = "select";
                span[a].id = "select" + inputs[a].name;
                span[a].appendChild(textnode);
                inputs[a].parentNode.insertBefore(span[a], inputs[a]);
                /*inputs[a].onchange = Custom.choose;*/
                $(inputs[a]).change(Custom.choose);
                span[a] = document.createElement("span");
                span[a].className = "arrow";
                inputs[a].parentNode.insertBefore(span[a], inputs[a]);
            }
        }
        /*Custom.setTabIndex();*/
    },
    setTabIndex: function() {
        inputs = document.getElementsByTagName("a");
        for (a = 0; a < inputs.length; a++) {
            inputs[a].tabIndex = 0;
        }
    },
    check: function() {
        element = this.nextSibling;
        if (element.disabled) {
            Custom.clear();
            return false;
        }
        element.click();
        if (element.checked == true && element.type == "checkbox") {
            this.style.backgroundPosition = "0 -" + checkboxHeight * 0 + "px";
            element.checked = false;
            element.focus();
        } else {
            if (element.type == "checkbox") {

                this.style.backgroundPosition = "0 -" + checkboxHeight * 1 + "px";
                element.focus();
            } else {
                this.style.backgroundPosition = "0 -" + radioHeight * 1 + "px";
                group = this.nextSibling.name;
                inputs = document.getElementsByTagName("input");
                for (a = 0; a < inputs.length; a++) {
                    if (inputs[a].name == group && inputs[a] != this.nextSibling) {
                        inputs[a].previousSibling.style.backgroundPosition = "0 0";
                    }
                }
            }
            element.checked = true;
        }
        Custom.clear();
        return false;
    },
    clear: function() {
        inputs = document.getElementsByTagName("input");
        for (var b = 0; b < inputs.length; b++) {
            if (inputs[b].disabled) {
                continue;
            }

            if (inputs[b].type == "checkbox" && inputs[b].checked == true && inputs[b].className == "styled") {
                inputs[b].parentNode.className = inputs[b].parentNode.className.replace(" checked", "");
                inputs[b].parentNode.className = inputs[b].parentNode.className + " checked";
                if (inputs[b].focused == true)
                    inputs[b].previousSibling.style.backgroundPosition = "0 -" + checkboxHeight * 3 + "px";
                else
                    inputs[b].previousSibling.style.backgroundPosition = "0 -" + checkboxHeight * 1 + "px";
            } else if (inputs[b].type == "checkbox" && inputs[b].className == "styled") {
                inputs[b].parentNode.className = inputs[b].parentNode.className.replace(" checked", "");
                if (inputs[b].focused == true)
                    inputs[b].previousSibling.style.backgroundPosition = "0 -" + checkboxHeight * 2 + "px";
                else
                    inputs[b].previousSibling.style.backgroundPosition = "0 0";
            } else if (inputs[b].type == "radio" && inputs[b].checked == true && inputs[b].className == "styled") {
                if (inputs[b].focused)
                    inputs[b].previousSibling.style.backgroundPosition = "0 -" + radioHeight * 3 + "px";
                else
                    inputs[b].previousSibling.style.backgroundPosition = "0 -" + radioHeight * 1 + "px";
            } else if (inputs[b].type == "radio" && inputs[b].className == "styled") {
                if (inputs[b].focused)
                    inputs[b].previousSibling.style.backgroundPosition = "0 -" + radioHeight * 2 + "px";
                else
                    inputs[b].previousSibling.style.backgroundPosition = "0 0";
            }
        }
    },
    highlight: function() {
        input = this;
        if (this.tagName == "SPAN") {
            input = this.nextSibling;
        }

        if (input.disabled) {
            return false;
        }

        if (input.type == "checkbox" && input.checked == true && input.className == "styled") {
            input.previousSibling.style.backgroundPosition = "0 -" + checkboxHeight * 3 + "px";
        } else if (input.type == "checkbox" && input.className == "styled") {
            input.previousSibling.style.backgroundPosition = "0 -" + checkboxHeight * 2 + "px";
        } else if (input.type == "radio" && input.checked == true && input.className == "styled") {
            input.previousSibling.style.backgroundPosition = "0 -" + radioHeight * 3 + "px";
        } else if (input.type == "radio" && input.className == "styled") {
            input.previousSibling.style.backgroundPosition = "0 -" + radioHeight * 2 + "px";
        }
    },
    choose: function() {
        option = this.getElementsByTagName("option");
        textnode = "";
        for (d = 0; d < option.length; d++) {
            if (option[d].selected == true && option[d].childNodes.length > 0) {
                textnode = option[d].childNodes[0].nodeValue;
            }
        }
        document.getElementById("select" + this.name).childNodes[0].nodeValue = textnode;
    },
    focus: function() {
        input = this;
        if (this.tagName == "SPAN") {
            input = this.nextSibling;
        }
        input.focused = true;
        Custom.clear();
    },
    blur: function() {
        input = this;
        if (this.tagName == "SPAN") {
            input = this.nextSibling;
        }
        input.focused = false;
        Custom.clear();
    }
}

/*$(document).ready(Custom.init);
$(window).load(Custom.init);
addEvent(window, 'load', Custom.init);*/

//window.onload = Custom.init;