用js封装的时间设置器

<style type="text/css">
body {
background-color: #D4D0C8;
}
.m_frameborder {
border-left: 2px inset #D4D0C8;
border-top: 2px inset #D4D0C8;
border-right: 2px inset #FFFFFF;
border-bottom: 2px inset #FFFFFF;
width: 100px;
height: 19px;
background-color: #FFFFFF;
overflow: hidden;
text-align: right;
font-family: "Tahoma";
font-size: 10px;
}
.m_arrow {
width: 16px;
height: 8px;
font-family: "Webdings";
font-size: 7px;
line-height: 2px;
padding-left: 2px;
cursor: default;
}
.m_input {
width: 18px;
height: 14px;
border: 0px solid black;
font-family: "Tahoma";
font-size: 9px;
text-align: right;
}
</style>

<script language="javascript">
// Written by cloudchen, 2004/03/15
function minute(name,fName) {
this.name = name;
this.fName = fName || "m_input";
this.timer = null;
this.fObj = null;

this.toString = function() {
var objDate = new Date();
var sMinute_Common = "class=\"m_input\" maxlength=\"2\" name=\"" this.fName "\" onfocus=\"" this.name ".setFocusObj(this)\" onblur=\"" this.name ".setTime(this)\" onkeyup=\"" this.name ".prevent(this)\" onkeypress=\"if (!/[0-9]/.test(String.fromCharCode(event.keyCode)))event.keyCode=0\" onpaste=\"return false\" ondragenter=\"return false\" style=\"ime-mode:disabled\"";
var sButton_Common = "class=\"m_arrow\" onfocus=\"this.blur()\" onmouseup=\"" this.name ".controlTime()\" disabled"
var str = "";
str = "<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">"
str = "<tr>"
str = "<td>"
str = "<div class=\"m_frameborder\">"
str = "<input radix=\"24\" value=\"" this.formatTime(objDate.getHours()) "\" " sMinute_Common ">:"
str = "<input radix=\"60\" value=\"" this.formatTime(objDate.getMinutes()) "\" " sMinute_Common ">:"
str = "<input radix=\"60\" value=\"" this.formatTime(objDate.getSeconds()) "\" " sMinute_Common ">"
str = "</div>"
str = "</td>"
str = "<td>"
str = "<table border=\"0\" cellspacing=\"2\" cellpadding=\"0\">"
str = "<tr><td><button id=\"" this.fName "_up\" " sButton_Common ">5</button></td></tr>"
str = "<tr><td><button id=\"" this.fName "_down\" " sButton_Common ">6</button></td></tr>"
str = "</table>"
str = "</td>"
str = "</tr>"
str = "</table>"
return str;
}
this.play = function() {
this.timer = setInterval(this.name ".playback()",1000);
}
this.formatTime = function(sTime) {
sTime = ("0" sTime);
return sTime.substr(sTime.length-2);
}
this.playback = function() {
var objDate = new Date();
var arrDate = [objDate.getHours(),objDate.getMinutes(),objDate.getSeconds()];
var objMinute = document.getElementsByName(this.fName);
for (var i=0;i<objMinute.length;i ) {
objMinute.value = this.formatTime(arrDate)<