// JavaScript Document
/*

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 radioHeight = "13";

/* No need to change anything after this */

function setClassNames(){
var todosLosInputs = document.getElementsByTagName('input');
for(i=0;i<todosLosInputs.length;i++){
var tipo=todosLosInputs[i].type;
todosLosInputs[i].className = tipo;
}
}

document.write('<style type="text/css">input.radio { display: none}</style>');
var Custom = {
	init: function() {
		setClassNames();
		var inputs = document.getElementsByTagName("input"), span = Array(), textnode, option, active;
		for(a = 0; a < inputs.length; a++) {
			if((inputs[a].type == "radio") && inputs[a].className == "radio") {
				span[a] = document.createElement("span");
				span[a].className = inputs[a].type;
				if(inputs[a].checked == true) {
					if(inputs[a].type == "radio"){
						position = "0 -" + (radioHeight*4) + "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;
			}
		}
	},
	pushed: function() {
		element = this.nextSibling;
		if(element.checked == true && element.type == "radio") {
			this.style.backgroundPosition = "0 -" + radioHeight*6 +"px";
		} else if(element.checked != true && element.type == "radio") {
			this.style.backgroundPosition = "0 -" + radioHeight*2 + "px";
		}
	},
	check: function() {
		element = this.nextSibling;
				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() {
		inputs = document.getElementsByTagName("input");
		for(var b = 0; b < inputs.length; b++) {
			if(inputs[b].type == "radio" && inputs[b].checked == true && inputs[b].className == "radio") {
				inputs[b].previousSibling.style.backgroundPosition = "0 -" + radioHeight*4 + "px";
			} else if(inputs[b].type == "radio" && inputs[b].className == "custom") {
				inputs[b].previousSibling.style.backgroundPosition = "0 0";
			}
		}
	},
	choose: function() {
		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;