用cookie实现记住内容？
程序代码：<html>
<head>
<title>
用cookie实现可记住表单
</title>
<!--脚本部分-->
<script>
function read_cookie(key){
var str,arry;
str=document.cookie;
arry=str.replace(/*;*/g,";").split(";");
key=escape(key)+"=";
for (i=0;i<arry.length;i++){
if(arry[i].indexOf(key)==0){
return(unescape(arry[i].split("=")[i]));
}
}
}
function write_cookie(key,value,cookiDomain,cookipath,cookieTimr,targetwindow)
var strAppendix="";
strAppendix += cookiDomain?";domain="+cookiDomain:"";
strAppendix += cookipath?";path="+cookipath:"";
strAppendix += expireTime?";expire="+expireTime:"";
targetwindow=targetwindow? targetwindow:top;
targetwindow.document.cookie=excape(key)+"="+excape(value)+strAppendix;
}
function loadDate(){
if(read_cookie("txt3"))$("txt3").value=read_cookie("txt3");
if(read_cookie("txt4"))$("txt4").value=read_cookie("txt4");
}
function saveDate(){
write_cookie("txt3",$("txt3").value);
write_cookie("txt4",$("txt4").value);
}
function $(str){return(document.getElementById(str));}
</script>
</head>
<body style="overflow:auto;" onload="loadDate";onunload="saveDate";>
<from>
<table>
<tr>
<td>普通文本框:</td>
<td><input id="text1"></td>
</tr>
<tr>
<td>普通文本框1:</td>
<td><input id="text2"></td>
</tr>
<tr>
<td>普通文本框2:</td>
<td><input id="text"></td>
<tr>
<td>普通文本框:</td>
<td><input id="text2"></td>
</tr>
<tr>
<td>可以记住内容文本框:</td>
<td><input id="text3"></td>
</tr>
<tr>
<td>可以记住内容文本框2:</td>
<td><input id="text4"></td>
</tr>
<td colspan="2">
<input name="sumbit" value="提交">
<input name="rest" value="重填">
<input name="button" value="查看cookie" onclick="alert(document.cookie);">
</body>
</html> 我是菜鸟一个，对于调试程序很差劲，希望大家能帮我看看这个程序那里出错？如图：
问题：提交和重填按钮没反应？
