/*

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.

* API List
*
*/

function jscss(a, o, c1, c2) {
	switch (a) {
		case 'swap':
			o.className=!jscss('check',o,c1)?o.className.replace(c2,c1):
			o.className.replace(c1,c2);
		break;
		case 'add':
			if(!jscss('check',o,c1)) {
				o.className+=o.className?' '+c1:c1;
			}
		break;
		case 'remove':
		var rep=o.className.match(' '+c1)?' '+c1:c1;
		o.className=o.className.replace(rep,'');
		break;
		case 'check':
		return new RegExp('\\b'+c1+'\\b').test(o.className);
		break;
	}
}

function getElementsByClassName(classname, node) {
	if(!node) { 
		node = document.getElementsByTagName("body")[0];
	}
	var a = [];
	var re = new RegExp('\\b' + classname + '\\b');
	var els = node.getElementsByTagName("*");
	for(var i=0,j=els.length; i<j; i++){
		if(re.test(els[i].className)) {
			a.push(els[i]);
		}
	}
	return a;
}


function addEvent( obj, type, fn ) {
// IE 6 browser, Opera 9
	if (obj.attachEvent){
		obj["e"+type+fn] = fn;
		obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
		obj.attachEvent( "on"+type, obj[type+fn] );
		//alert('attachEvent');
	}
	else if (obj.addEventListener){
// Safari 3.1.2, FF 2
		obj.addEventListener(type, fn, false);
		//alert('attachEventListener');
	}

}

function removeEvent( obj, type, fn ){
	if (obj.removeEventListener)
		obj.removeEventListener( type, fn, false );
	else if (obj.detachEvent)
	{
		obj.detachEvent( "on"+type, obj[type+fn] );
		obj[type+fn] = null;
		obj["e"+type+fn] = null;
	}
}

function hideControl(objEvent, action, condition){
var items;
var i;
	items = getElementsByClassName(action);
	for (i=0; i <items.length; i++) {
		if (objEvent.value == condition || objEvent == '') {
			items[i].style.display = '';
		}
		else {
			items[i].style.display = 'none';		
		}
	}
}

function showClass(classNam){
var m;
	find = getElementsByClassName(classNam); 
	for(m=0;m < find.length;m++){
		find[m].style.display='';
	}
}

/*
* Check for compatibility
*/


	
var checkboxHeight = "25";
var radioHeight = "25";
var selectWidth = "190";
var origChange = new Array();
var onchange;

/* No need to change anything after this */
/*
document.write('<style type="text/css" >input.styled { display: none; } select.styled { position: relative; opacity: 0;filter:alpha(opacity=0); z-index: 5; }</style>');
*/

var Custom = {
	init: function() {
var a;
		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") && inputs[a].className == "styled") {
				span[a] = document.createElement("span");
				span[a].className = inputs[a].type;

				if(inputs[a].checked == true) {
					if(inputs[a].type == "checkbox") {
						position = "0 -" + (checkboxHeight*2) + "px";
						span[a].style.backgroundPosition = position;
					} else {
						position = "0 -" + (radioHeight*2) + "px";
						span[a].style.backgroundPosition = position;
					}
				}
				inputs[a].parentNode.insertBefore(span[a], inputs[a]);
				inputs[a].onchange = Custom.clear;
				span[a].onmousedown = Custom.pushed;
				span[a].onmouseup = Custom.check;
				document.onmouseup = Custom.clear;
			}
		}
		inputs = document.getElementsByTagName("select");
		for(a = 0; a < inputs.length; a++) {
			if(jscss('check',inputs[a], 'styled')){
			//if(inputs[a].className == "styled") {
				option = inputs[a].getElementsByTagName("option");
				active = option[0].childNodes[0].nodeValue;
				textnode = document.createTextNode(active);
				for(b = 0; b < option.length; b++) {
					if(option[b].selected == true) {
						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);
				span[a].onblur = inputs[a].onblur;
				span[a].onfocus = inputs[a].onfocus;
				inputs[a].parentNode.insertBefore(span[a], inputs[a]);
				addEvent(inputs[a], 'change', Custom.choose);
			}
		}
	},
	pushed: function() {
		element = this.nextSibling;
		if(element.checked == true && element.type == "checkbox") {
			this.style.backgroundPosition = "0 -" + checkboxHeight*3 + "px";
		} else if(element.checked == true && element.type == "radio") {
			this.style.backgroundPosition = "0 -" + radioHeight*3 + "px";
		} else if(element.checked != true && element.type == "checkbox") {
			this.style.backgroundPosition = "0 -" + checkboxHeight + "px";
		} else {
			this.style.backgroundPosition = "0 -" + radioHeight + "px";
		}
	},
	check: function() {
	var a;
		element = this.nextSibling;
		if(element.checked == true && element.type == "checkbox") {
			this.style.backgroundPosition = "0 0";
			element.checked = false;
		} else {
			if(element.type == "checkbox") {
				this.style.backgroundPosition = "0 -" + checkboxHeight*2 + "px";
			} else {
				this.style.backgroundPosition = "0 -" + radioHeight*2 + "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;
		}
	},
	clear: function() {
		var b;
		inputs = document.getElementsByTagName("input");
		for(var b = 0; b < inputs.length; b++) {
			if(inputs[b].type == "checkbox" && inputs[b].checked == true && inputs[b].className == "styled") {
				inputs[b].previousSibling.style.backgroundPosition = "0 -" + checkboxHeight*2 + "px";
			} else if(inputs[b].type == "checkbox" && inputs[b].className == "styled") {
				inputs[b].previousSibling.style.backgroundPosition = "0 0";
			} else if(inputs[b].type == "radio" && inputs[b].checked == true && inputs[b].className == "styled") {
				inputs[b].previousSibling.style.backgroundPosition = "0 -" + radioHeight*2 + "px";
			} else if(inputs[b].type == "radio" && inputs[b].className == "styled") {
				inputs[b].previousSibling.style.backgroundPosition = "0 0";
			}
		}
	},
	choose: function() {
		var d;
		option = this.getElementsByTagName("option");
		for(d = 0; d < option.length; d++) {
			if(option[d].selected == true) {
				document.getElementById("select" + this.name).childNodes[0].nodeValue = option[d].childNodes[0].nodeValue;
			}
		}

	}
}
window.onload = Custom.init;