js和jquery控制超链接

1、使所有的窗口都在子窗口打开
<script language="javascript">
//跳到新窗口
function externallinks() {
if (!document.getElementsByTagName) return;
var anchors = document.getElementsByTagName_r("a");
for (var i=0; i<anchors.length; i++) {
var anchor = anchors[i];
if (anchor.getAttribute("href"))
anchor.target = "_blank";
}
}
window.onload = externallinks;

</script>

2、超链接，一部分在本窗口打开，大部分在新窗口打开
只要在超链接那设置target="_self"，并改为如下：
<script language="javascript">
function externallinks() { 
if (!document.getElementsByTagName) return; 
var anchors = document.getElementsByTagName("a"); 
for (var i=0; i<anchors.length; i++) { 
var anchor = anchors[i]; 
if (anchor.getAttribute("target")!='_self') 
anchor.target = "_blank"; 
} 
} 
window.onload = externallinks;
</script>