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();
//this.ie = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
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 init() {
	if(!document.getElementById) {return false;}
	getElements();
	separateElements();
	//replaceRadios();
	//replaceCheckboxes();
	replaceSelects();
/*	if (!isMac) {
		replaceButtons();	
	} */
}


// 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 = 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
}

// replacing buttons
function replaceButtons() {
	for (var i = 0; i < buttons.length; i++) {
		// button holder
		var buttonHolder = document.createElement("div");
		buttonHolder.className = "buttonSubmit";		
		buttons[i].parentNode.appendChild(buttonHolder);
		
		// left image
		var buttonLeft = document.createElement("span");
		buttonLeft.className = "left";
		buttonHolder.appendChild(buttonLeft);
		
		// append button into holder
		buttonHolder.appendChild(buttons[i]);
		
		//right image
		var buttonRight = document.createElement('span');
		buttonRight.className = "right";
		buttonHolder.appendChild(buttonRight);
	}
}

//replacing selects
function replaceSelects() {
    for(var q = 0; q < selects.length; q++) {
    	
    	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;
		selectArea.style.width = stWidth - 2 + "px";

		button.href = "javascript:showOptions("+q+")";
		button.onkeydown = selectEvent;
		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.appendChild(optionsList);
		
		selects[q]._options = optionsList;
		selects[q]._optionsDiv = optionsDiv;
		
		//optionsDiv.style.width = stWidth - 4 + "px";
		if (stWidth)
		{
			optionsDiv.style.width = stWidth - 2 + "px";
		}
		else {
			optionsDiv.style.width = "158px";
		}
		optionsDiv._parent = selectArea;
		
		optionsDiv.className = "optionsDivInvisible";
		optionsDiv.id = "optionsDiv"+q;
	
		populateSelectOptions(selects[q]);	
		//selectArea.appendChild(optionsDiv);
		document.getElementsByTagName("body")[0].appendChild(optionsDiv);
	}
	all_selects = true;
	document.onclick = hideOptions;
}

//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 = document.createTextNode(me.options[w].text);
		
		optionLink.href = "javascript:showOptions("+me._number+"); selectMe('"+me.id+"',"+w+","+me._number+");";
		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";
	}
}

//select event
function selectEvent(e) {
	if (!e) var e = window.event;
	var thecode = e.keyCode;
	switch(thecode){
		case 40: //down
			var fieldId = this.parentNode.id.replace("sarea", "");
			var linkNo = 0;
			for(var q = 0; q < selects[fieldId].options.length; q++) {if(selects[fieldId].options[q].selected) {linkNo = q;}}
			++linkNo;
			if(linkNo >= selects[fieldId].options.length) {linkNo = 0;}
			selectMe(selects[fieldId].id, linkNo, fieldId);
			return false;
			break;
		case 38: //up
			var fieldId = this.parentNode.id.replace("sarea", "");
			var linkNo = 0;
			for(var q = 0; q < selects[fieldId].options.length; q++) {if(selects[fieldId].options[q].selected) {linkNo = q;}}
			--linkNo;
			if(linkNo < 0) {linkNo = selects[fieldId].options.length - 1;}
			selectMe(selects[fieldId].id, linkNo, fieldId);
			return false;
			break;
		case 27: //escape
			if (active_select)
			{
				active_select.className = "optionsDivInvisible";
				active_select = null;
			}
			break;
		default:
			break;
	} 
}

//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 = document.createTextNode(selectField.options[linkNo].text);
	textVar.replaceChild(newText, textVar.childNodes[0]);
	if (active_select)
	{
		active_select.className = "optionsDivInvisible";
	}
	active_select = null;
}

//showing options
function showOptions(g) {
		_elem = document.getElementById("optionsDiv"+g);		
		if (active_select && active_select != _elem) {
			active_select.className = "optionsDivInvisible";
			//active_select.style.height = "auto";
		}
		if(_elem.className=="optionsDivInvisible") {
			_elem.style.left = "-9999px";
			_elem.style.top = findPosY(_elem._parent) + 19 + 'px';
			_elem.className = "optionsDivVisible";
			_elem.style.left = findPosX(_elem._parent) + 'px';
			
			active_select = _elem;
		}
		else if(_elem.className=="optionsDivVisible") {
			_elem.className = "optionsDivInvisible";
		}
		//_elem.onmouseout = hideOptions;
}

function hideOptions(e) { //hiding the options on mouseout
	if (!e) var e = window.event;
	if (active_select)
	{
		active_select.className = "optionsDivInvisible";
		active_select = null;
		e.cancelBubble = true;
	}
	//var reltg = (e.relatedTarget) ? e.relatedTarget : e.toElement;
	//this.className = "optionsDivInvisible";
	
	if (e.stopPropagation) e.stopPropagation();
}

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 = init;