想用一个本地html文件中的一个按钮获得远程地址中的内容，尝试了httpRequest和frames都不行，貌似遇到了同源问题，请大侠帮忙。
如网址：http://www.
<!DOCTYPE HTML>
<html>
<head>
<title>指定网址，获得内容</title>
<link rel = "stylesheet" type = "text/css" href = "mystyle.css"></link>
<style>
#pannel{
color:red;
}
</style>
<head>
<body>
<script>
var httpRequest = new XMLHttpRequest();
function getfromnet(){
var url = document.getElementById("theurl").value;
alert(url);
//var httpRequest = new XMLHttpRequest();
httpRequest.onreadystatechange = handleResponse;
httpRequest.open("GET", url);
httpRequest.send();
sleep(1000);
}
function handleResponse(){
alert("here");
alert(httpRequest.responseText);
}
</script>
<div id = pannel style="border: medium maroon dashed;width:31em;">
<p style="font-size:2rem"><h3>请输入目标网址：</h3></p>
<input type = "textarea" placeholder = "http://10.0.4.87:8080/tisco/login.html#reloaded"
id = theurl
value = "http://10.0.4.87:8080/tisco/login.html#reloaded"
style = "text-decoration:underline;background:yellow;color:red;padding:2px;width:30em">
</input>
<p/>
<input type = "submit" onclick = "getfromnet()"></input>
</div>
<a href = "http://oa.(page)/tisconew">OA</a>
</body>
</html>