var niceforms = document.getElementsByTagName('form'); 
var selects = new Array(); 
var selectText = "please select"; 
var agt = navigator.userAgent.toLowerCase(); 
this.ie = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1)); 
var hovers = new Array(); 
var isMac = new RegExp('(^|)'+'Apple'+'(|$)');

//Theme Variables - edit these to match your theme
var selectRightSideWidth = 21;
var selectLeftSideWidth = 8;
var selectAreaHeight = 21;
var selectAreaOptionsOverlap = 2;

var _eCache = {};
function $(id) {
	return _eCache[id] || (_eCache[id] = (document.getElementById) ? document.getElementById(id) : document.all(id));
}

function register(e) {
if (!e) e = window.event;
var k = e.keyCode;
var d;

	if (k == 37) {
		d = $('prev_page');
	}

	if (k == 39) {
		d = $('next_page');
	}

	if (d) location.href = d.href;
}



//Initialization function - if you have any other 'onload' functions, add them here
function init() {
	if(!document.getElementById) {return false;}
	preloadImages();
	getElements();
	separateElements();
	replaceSelects();
	
	document.onkeydown = register;

}


//preloading required images
function preloadImages() {
	preloads = new Object();
}
//getting all the required elements
function getElements() {
	var re = new RegExp('(^| )'+'niceform'+'( |$)');
	for (var nf = 0; nf < document.getElementsByTagName('form').length; nf++) {
		if(re.test(niceforms[nf].className)) {
			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;
}

function replaceSelects() {
    for(var q = 0; q < selects.length; q++) {
		//create and build div structure
		var selectArea = document.createElement('div');
		var left = document.createElement('div');
		var right = document.createElement('div');
		var center = document.createElement('div');
		var button = document.createElement('a');
		var text = document.createTextNode(selectText);
		center.id = "mySelectText"+q;
		var selectWidth = parseInt(selects[q].className.replace(/width_/g, ""));
		center.style.width = selectWidth - 10 + 'px';
		selectArea.style.width = selectWidth + selectRightSideWidth + selectLeftSideWidth + 'px';
		button.style.width = selectWidth + selectRightSideWidth + selectLeftSideWidth + 'px';
		button.style.marginLeft = - selectWidth - selectLeftSideWidth + 'px';
		button.href = "javascript:showOptions("+q+")";
		button.onkeydown = selectEvent;
		button.className = "selectButton"; //class used to check for mouseover
		selectArea.className = "selectArea";
		selectArea.id = "sarea"+q;
		left.className = "left";
		right.className = "right";
		center.className = "center";
		right.appendChild(button);
		center.appendChild(text);
		selectArea.appendChild(left);
		selectArea.appendChild(right);
		selectArea.appendChild(center);
		//hide the select field
        selects[q].style.display='none'; 
		//insert select div
		selects[q].parentNode.insertBefore(selectArea, selects[q]);
		//build & place options div
		var optionsDiv = document.createElement('div');
		optionsDiv.style.width = selectWidth + 1 + 'px';
		optionsDiv.className = "optionsDivInvisible";
		optionsDiv.id = "optionsDiv"+q;
		optionsDiv.style.left = findPosX(selectArea) + 'px';
		optionsDiv.style.top = findPosY(selectArea) + selectAreaHeight - selectAreaOptionsOverlap + 'px';
		//get select's options and add to options div
		for(var w = 0; w < selects[q].options.length; w++) {
			var optionHolder = document.createElement('p');
			var optionLink = document.createElement('a');
			var optionTxt = document.createTextNode(selects[q].options[w].text);
			optionLink.href = "javascript:showOptions("+q+"); selectMe('"+selects[q].id+"',"+w+","+q+");";
			optionLink.appendChild(optionTxt);
			optionHolder.appendChild(optionLink);
			optionsDiv.appendChild(optionHolder);
			//check for pre-selected items
			if(selects[q].options[w].selected) {selectMe(selects[q].id,w,q);}
		}
		//insert options div
		document.getElementsByTagName("body")[0].appendChild(optionsDiv);
	}
}
function showOptions(g) {
		elem = document.getElementById("optionsDiv"+g);
		if(elem.className=="optionsDivInvisible") {elem.className = "optionsDivVisible";}
		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;
	var reltg = (e.relatedTarget) ? e.relatedTarget : e.toElement;
	if(((reltg.nodeName != 'A') && (reltg.nodeName != 'DIV')) || ((reltg.nodeName == 'A') && (reltg.className=="selectButton") && (reltg.nodeName != 'DIV'))) {this.className = "optionsDivInvisible";};
	e.cancelBubble = true;
	if (e.stopPropagation) e.stopPropagation();
}
function selectMe(selectFieldId,linkNo,selectNo) {
	//feed selected option to the actual select field
	selectField = document.getElementById(selectFieldId);
	for(var k = 0; k < selectField.options.length; k++) {
		if(k==linkNo) {selectField.options[k].selected = "selected";}
		else {selectField.options[k].selected = "";}
	}
	//show selected option
	textVar = document.getElementById("mySelectText"+selectNo);
	var newText = document.createTextNode(selectField.options[linkNo].text);
	textVar.replaceChild(newText, textVar.childNodes[0]);
}
function selectEvent(e) {
	if (!e) var e = window.event;
	var thecode = e.keyCode;
	switch(thecode){
		case 40: //down
			var fieldId = this.parentNode.parentNode.id.replace(/sarea/g, "");
			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);
			break;
		case 38: //up
			var fieldId = this.parentNode.parentNode.id.replace(/sarea/g, "");
			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);
			break;
		default:
			break;
	}
}
//Useful functions
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;