符合标准的Focus功能的提交信息表单

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<style type="text/css">
form{
margin: 0px auto;
width: 450px;
border: solid 1px #CCCCCC;
}
.bo{
border-bottom: solid 1px #CCCCCC;
}
label{
float: left;
padding: 10px 0px 4px 30px;
}
input{
padding: 1px;
}
input,textarea{
border: 1px solid #CCCCCC;
margin: 5px 0px;
}
textarea{
padding: 2px;
}
.bt{
width: 38px;
height: 20px;
font-size: 11px;
border: solid 1px #CCCCCC;
background: #FBFBFB;
text-align: center;
}
.btcenter{
text-align: center;
clear: left;
padding: 4px 0px 0px;
}
.sffocus {
background: #F0F9FB; /*----for IE----*/
border: 1px solid #1D95C7;
}
textarea:focus, input:focus {
background: #F0F9FB; /*----for firefox......----*/
border: 1px solid #1D95C7;
}
body {
font-family: Arial, Helvetica, sans-serif;
font-size: 12px;
color: #666666;
margin-top: 20px;
}
</style>
<script  type="text/javascript">
function suckerfish(type, tag, parentId) {
if (window.attachEvent) {
window.attachEvent("onload", function() {
var sfEls = (parentId==null)?document.getElementsByTagName(tag):document.getElementById(parentId).getElementsByTagName(tag);
type(sfEls);
});
}
}
sfHover = function(sfEls) {
for (var i=0; i<sfEls.length; i++) {
sfEls[i].onmouseover=function() {
this.className+=" sfhover";
}
sfEls[i].onmouseout=function() {
this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
}
}
}
sfFocus = function(sfEls) {
for (var i=0; i<sfEls.length; i++) {
sfEls[i].onfocus=function() {
this.className+=" sffocus";
}
sfEls[i].onblur=function() {
this.className=this.className.replace(new RegExp(" sffocus\\b"), "");
}
}
}
sfActive = function(sfEls) {
for (var i=0; i<sfEls.length; i++) {
sfEls[i].onmousedown=function() {
this.className+=" sfactive";
}
sfEls[i].onmouseup=function() {
this.className=this.className.replace(new RegExp(" sfactive\\b"), "");
}
}
}
sfTarget = function(sfEls) {
var aEls = document.getElementsByTagName("A");
document.lastTarget = null;
for (var i=0; i<sfEls.length; i++) {
if (sfEls[i].id) {
if (location.hash==("#" + sfEls[i].id)) {
sfEls[i].className+=" sftarget";
document.lastTarget=sfEls[i];
}
for (var j=0; j<aEls.length; j++) {
if (aEls[j].hash==("#" + sfEls[i].id)) aEls[j].targetEl = sfEls[i];
aEls[j].onclick = function() {
if (document.lastTarget) document.lastTarget.className = document.lastTarget.className.replace(new RegExp(" sftarget\\b"), "");
if (this.targetEl) this.targetEl.className+=" sftarget";
document.lastTarget=this.targetEl;
return true;
}
}
}
}
}
suckerfish(sfHover, "p");
suckerfish(sfActive, "p");
suckerfish(sfHover, "INPUT");
suckerfish(sfActive, "TEXTAREA");
suckerfish(sfFocus, "INPUT");
suckerfish(sfFocus, "TEXTAREA");
suckerfish(sfTarget, "H5");
suckerfish(sfHover, "pre");
suckerfish(sfActive, "pre");
</script></head>
<body>
<form action="#" method="post" name="myform" id="myform">
<div class="bo"><label for="name">姓名：</label>
<input type="text"size="20" name="name" id="name" maxlength="10" /></div>
<div class="bo"><label for="tel">电话：</label>
<input type="text" size="20" name="tel" id="tel" maxlength="16" /></div>
<div class="bo"><label for="mo">主题：</label>
<input type="text" size="30" name="mo" id="mo" maxlength="20" /></div>
<div class="bo"><label for="con">内容：</label>
<textarea cols="40" rows="8" name="con" id="con">

提示：您可以先修改部分代码再运行，复制代码和保存代码功能在Firefox下无效。

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