var checkboxHeight = "19";
var radioHeight = "19";
var setMouseActions = true;

var FormElements = {
	
	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") && inputs[a].className.indexOf('styled') >= 0 && inputs[a].className.indexOf('dicode') < 0 ) {
				span[a] = document.createElement("span");
				span[a].className = inputs[a].type;

				$.each((inputs[a].className || "").split(/\s+/), function(i, className){
					$(span[a]).addClass(className);
				});
				
				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]);
				if (typeof inputs[a].onchange != 'function') {
					inputs[a].onchange = FormElements.clear;
				} else {
					inputs[a].onclick = inputs[a].onchange;
					inputs[a].onchange = function() {
						this.onclick;
						FormElements.clear();
					};
				}

				$(inputs[a]).addClass('dicode');
		
				if ( setMouseActions ) {
					span[a].onmousedown = FormElements.pushed;
					span[a].onmouseup = FormElements.check;
				}
				document.onmouseup = FormElements.clear;
			}
		}
	},
	pushed: function() {
		element = this.nextSibling;
		
		if(element.disabled)
			return;
		
		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() {
		element = this.nextSibling;
		
		if(element.disabled)
			return;

		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 && inputs[a].previousSibling.style) {
						inputs[a].previousSibling.style.backgroundPosition = "0 0";
					}
				}
			}
			element.checked = true;
		}
		if ( element.onclick )
			element.onclick();
	},
	clear: function( ) {
		inputs = document.getElementsByTagName("input");
		for(var b = 0; b < inputs.length; b++) {
			if(inputs[b].type == "checkbox" && inputs[b].checked == true && $(inputs[b]).hasClass('styled') && $(inputs[b]).hasClass('dicode')) {
				inputs[b].previousSibling.style.backgroundPosition = "0 -" + checkboxHeight*2 + "px";
			} else if(inputs[b].type == "checkbox" && $(inputs[b]).hasClass('styled') && $(inputs[b]).hasClass('dicode')) {
				inputs[b].previousSibling.style.backgroundPosition = "0 0";
			} else if(inputs[b].type == "radio" && inputs[b].checked == true && $(inputs[b]).hasClass('styled') && $(inputs[b]).hasClass('dicode')) {
				inputs[b].previousSibling.style.backgroundPosition = "0 -" + radioHeight*2 + "px";
			} else if(inputs[b].type == "radio" && $(inputs[b]).hasClass('styled') && $(inputs[b]).hasClass('dicode')) {
				inputs[b].previousSibling.style.backgroundPosition = "0 0";
			}
		}
	}

}