WEB标准学习：自定义打开链接的方式

　　由于在XHTML1.0过渡型标准之前，target="_blank"属性一直是点击链接后弹出新窗口的方法，但是XHTML1.0严格型标准以及XHTML1.1之后就不再支持target属性，

　　也就是说不能再用target="_blank"来弹出一个新的窗口!本实例探讨的是在XHTML1.1标准下弹出新窗口的方法，并结合Cookies实现客户端自定义弹出新窗口的方法。

以下是引用片段：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>自定义打开链接的方式</title>
<style type="text/css">

</style>
<script type="text/javascript">
<!--
function onlinks(){

if(getCookie("links")=="_blank"){
document.getElementById("c1").checked=true;
document.getElementById("c2").checked=true;
newlinks();//dolinks();
}
else{
document.getElementById("c1").checked=false;
document.getElementById("c2").checked=false;
newlinks();//dolinks();
}
}

function dolinks(){
document.getElementById("c2").checked?setCookie('links','_blank',1):deleteCookie('links');
}

function newlinks() {
document.getElementById("c1").checked?fc1():fc2()
function fc1(){
linktarget="_blank";document.getElementById("cookies_p").style.display="block"}
function fc2(){
linktarget="";document.getElementById("cookies_p").style.display="none"}

var anchors = document.getElementsByTagName("a");
for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
   if (anchor.getAttribute("href"))
     anchor.target = linktarget;
}
}

function getCookie(name) {
    var start = document.cookie.indexOf( name + "=" );
    var len = start + name.length + 1;
    if ( ( !start ) && ( name != document.cookie.substring( 0, name.length ) ) ) {
        return null;
    }
    if ( start == -1 ) return null;
    var end = document.cookie.indexOf( ";", len );
    if ( end == -1 ) end = document.cookie.length;
    return unescape( document.cookie.substring( len, end ) );
}

function setCookie( name, value, expires, path, domain, secure ) {
    var today = new Date();
    today.setTime( today.getTime() );
    if ( expires ) {
        expires = expires * 1000 * 60 * 60 * 24;
    }
    var expires_date = new Date( today.getTime() + (expires) );
    document.cookie = name+"="+escape( value ) +
        ( ( expires ) ? ";expires="+expires_date.toGMTString() : "" ) + //expires.toGMTString()
        ( ( path ) ? ";path=" + path : "" ) +
        ( ( domain ) ? ";domain=" + domain : "" ) +
        ( ( secure ) ? ";secure" : "" );
}

function deleteCookie( name, path, domain ) {
    if ( getCookie( name ) ) document.cookie = name + "=" +
            ( ( path ) ? ";path=" + path : "") +
            ( ( domain ) ? ";domain=" + domain : "" ) +
            ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}
-->
</script>
<script src="http://www.aaa.com/... /javascript">
</script>
<script type="text/javascript">
_uacct = "UA-97125-1";
urchinTracker();
</script>
</head>
<body onload="onlinks();">
<div id="main">
<div id="title">自定义打开链接的方式</div>
<div id="property">
    <label>
    <input type="checkbox" id="c1" value="checkbox" onclick="newlinks();" />
    打开链接为新窗口</label>
    <span id="cookies_p" style="display:none">
    <label>
    <input type="checkbox" id="c2" value="checkbox" onclick="dolinks();" />
    记住我的选择</label></span>
</div>
<div id="link">
    <p><a href="www.gaoqian.comwww.gaoqian.comhttp://www.gaoqian.com">www.gaoqian.com</a></p>
    <p><a href="code.knowsky.comcode.knowsky.comhttp://code.knowsky.com">code.knowsky.com</a></p>
    <p><a href="font.knowsky.comfont.knowsky.comhttp://font.knowsky.com">font.knowsky.com</a></p>
    <p><a href="soft.knowsky.comsoft.knowsky.comhttp://soft.knowsky.com">soft.knowsky.com</a></p>
</div>
<div id="copyright">
内容</div>
<p class="center">
<a href="http://validator.w3.org/check?uri=referer"><imgsrc="http://www.w3.org/Icons/valid-xhtml11&quo ... 31"width="88"/></a></p></div>
</body>
</html>