https://www.topseos.com/js/form.js

1var checkboxHeight = "25";
2var radioHeight = "25";
3
4var Custom = {
5	init: function() {
6		var inputs = document.getElementsByTagName("input"), span = Array(), textnode, option, active;
7		for(a = 0; a < inputs.length; a++) {
8			if((inputs[a].type == "checkbox" || inputs[a].type == "radio") && inputs[a].className.indexOf("styled") > -1) {
9				span[a] = document.createElement("span");
10				span[a].className = inputs[a].type;
11
12				if(inputs[a].checked == true) {
13					if(inputs[a].type == "checkbox") {
14						position = "0 -" + (checkboxHeight*2) + "px";
15						span[a].style.backgroundPosition = position;
16					} else {
17						position = "0 -" + (radioHeight*2) + "px";
18						span[a].style.backgroundPosition = position;
19					}
20				}
21				inputs[a].parentNode.insertBefore(span[a], inputs[a]);
22				inputs[a].onchange = Custom.clear;
23				if(!inputs[a].getAttribute("disabled")) {
24					span[a].onmousedown = Custom.pushed;
25					span[a].onmouseup = Custom.check;
26				} else {
27					span[a].className = span[a].className += " disabled";
28				}
29			}
30		}
31		inputs = document.getElementsByTagName("select");
32		for(a = 0; a < inputs.length; a++) {
33			if(inputs[a].className.indexOf("styled") > -1) {
34				option = inputs[a].getElementsByTagName("option");
35				active = option[0].childNodes[0].nodeValue;
36				textnode = document.createTextNode(active);
37				for(b = 0; b < option.length; b++) {
38					if(option[b].selected == true) {
39						textnode = document.createTextNode(option[b].childNodes[0].nodeValue);
40					}
41				}
42				span[a] = document.createElement("span");
43				span[a].className = "select";

44				span[a].id = "select" + inputs[a].name;
45				span[a].appendChild(textnode);
46				inputs[a].parentNode.insertBefore(span[a], inputs[a]);
47				if(!inputs[a].getAttribute("disabled")) {
48					inputs[a].onchange = Custom.choose;
49				} else {
50					inputs[a].previousSibling.className = inputs[a].previousSibling.className += " disabled";
51				}
52			}
53		}
54		document.onmouseup = Custom.clear;
55	},
56	pushed: function() {
57		element = this.nextSibling;
58		if(element.checked == true && element.type == "checkbox") {
59			this.style.backgroundPosition = "0 -" + checkboxHeight*3 + "px";
60		} else if(element.checked == true && element.type == "radio") {
61			this.style.backgroundPosition = "0 -" + radioHeight*3 + "px";
62		} else if(element.checked != true && element.type == "checkbox") {
63			this.style.backgroundPosition = "0 -" + checkboxHeight + "px";
64		} else {
65			this.style.backgroundPosition = "0 -" + radioHeight + "px";
66		}
67	},
68	check: function() {
69		element = this.nextSibling;
70		if(element.checked == true && element.type == "checkbox") {
71			this.style.backgroundPosition = "0 0";
72			element.checked = false;
73		} else {
74			if(element.type == "checkbox") {
75				this.style.backgroundPosition = "0 -" + checkboxHeight*2 + "px";
76			} else {
77				this.style.backgroundPosition = "0 -" + radioHeight*2 + "px";
78				group = this.nextSibling.name;
79				inputs = document.getElementsByTagName("input");
80				for(a = 0; a < inputs.length; a++) {
81					if(inputs[a].name == group && inputs[a] != this.nextSibling) {
82						inputs[a].previousSibling.style.backgroundPosition = "0 0";
83					}
84				}
85			}
86			element.checked = true;
87		}
88	},
89	clear: function() {
90		inputs = document.getElementsByTagName("input");
91		for(var b = 0; b < inputs.length; b++) {
92			if(inputs[b].type == "checkbox" && inputs[b].checked == true && inputs[b].className.indexOf("styled") > -1) {
93				inputs[b].previousSibling.style.backgroundPosition = "0 -" + checkboxHeight*2 + "px";
94			} else if(inputs[b].type == "checkbox" && inputs[b].className.indexOf("styled") > -1) {
95				inputs[b].previousSibling.style.backgroundPosition = "0 0";
96			} else if(inputs[b].type == "radio" && inputs[b].checked == true && inputs[b].className.indexOf("styled") > -1) {
97				inputs[b].previousSibling.style.backgroundPosition = "0 -" + radioHeight*2 + "px";
98			} else if(inputs[b].type == "radio" && inputs[b].className.indexOf("styled") > -1) {
99				inputs[b].previousSibling.style.backgroundPosition = "0 0";
100			}
101		}
102	},
103	choose: function() {
104		option = this.getElementsByTagName("option");
105		for(d = 0; d < option.length; d++) {
106			if(option[d].selected == true) {
107				document.getElementById("select" + this.name).childNodes[0].nodeValue = option[d].childNodes[0].nodeValue;
108			}
109		}
110	}
111}
112
113window.onload = Custom.init;