用css来实现Focus效果的提交信息表单
Feb 8, 2007 by 大龙蛮酷的效果，为了兼容ie6使用了一些简单的javascript代码，效果如下：
xhtml代码:
<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"></textarea></div>
<div class="btcenter"><input type="submit" class="bt" value="Send" />
<input type="reset" class="bt" value="Reset" /></div></form>
<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"></textarea></div>
<div class="btcenter"><input type="submit" class="bt" value="Send" />
<input type="reset" class="bt" value="Reset" /></div></form>
css代码：
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;
}
/*----下面是选中表单时的变化效果，大家可以自由发挥的---*/
.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;
}
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;
}
/*----下面是选中表单时的变化效果，大家可以自由发挥的---*/
.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;
}
js代码（注：js代码主要针对IE6的，IE7已经支持focus了,FIREFOX、NS…..不需要。）：
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);
});
}
}
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(" sffocusb"), "");
}
}
}
suckerfish(sfFocus, "INPUT");
suckerfish(sfFocus, "TEXTAREA");
if (window.attachEvent) {
window.attachEvent("onload", function() {
var sfEls = (parentId==null)?document.getElementsByTagName(tag):document.getElementById(parentId).getElementsByTagName(tag);
type(sfEls);
});
}
}
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(" sffocusb"), "");
}
}
}
suckerfish(sfFocus, "INPUT");
suckerfish(sfFocus, "TEXTAREA");
