我用window.open可以在一個頁面中打開多個窗口嗎?

1.html<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<script>
var open1="";
function winOpen(path){
alert(document.getElementById("pass").value)
var v = document.getElementById("pass").value;
if(v == "close") {
open1 = window.open(path,"","height=200,width=300");
document.getElementById("pass").value = "open";
}else{
open1.location.href=path;
document.getElementById("pass").value = "open";
}}
</script>
</HEAD>
<BODY>
<input type="button" name="button1" value="button1" onclick="winOpen('2.html')"><input type="button" name="button2" value="button2" onclick="winOpen('3.html')">
<input type="hidden" id="pass" value="close"></BODY>
</HTML>2.html<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT=""><script>
function closeWindow(){
opener.document.getElementById("pass").value = "close";
}
</script>
</HEAD><BODY onunload="closeWindow()">
<input type="text" name="text" value="22222222222222" id="page2"></BODY>
</HTML>
3.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT=""><script>
function closeWindow(){
opener.document.getElementById("pass").value = "close";

}
</script>
</HEAD><BODY onunload="closeWindow()">
3333333333333333333333
</BODY>
</HTML>