AJAX字符集的问题

[95306]

<script type="text/javascript">

var rootdomain="http://"+window.location.hostname

function ajaxinclude(url) {
var page_request = false
if (window.XMLHttpRequest) // if Mozilla, Safari etc
page_request = new XMLHttpRequest()
else if (window.ActiveXObject){ // if IE
try {
page_request = new ActiveXObject("Msxml2.XMLHTTP")
}
catch (e){
try{
page_request = new ActiveXObject("Microsoft.XMLHTTP")
page_request.setRequestHeader("Content-Type","text/xml");
page_request.setRequestHeader("Content-Type","gb2312");
}
catch (e){}
}
}
else
return false
page_request.open('GET', url, false) //get page synchronously
page_request.send(null)
writecontent(page_request)
}

function writecontent(page_request){
if (window.location.href.indexOf("http")==-1 || page_request.status==200)

document.write(page_request.responseText)

}

</script>
<script type="text/javascript">
ajaxinclude("http://www.smallrain.net/help.htm")
</script>
请问如何别编码,才能正确显示gb2312字符

[喜受写代码的小强]

deing

[bigzhu]

对url进行escape
对page_request.responseText进行unescape

[zbstone]

把所有页面都换成utf-8编码