<HTML>
<HEAD>
<TITLE>link status check</TITLE>
<SCRIPT>
function fetchHTTPStatus (url) {
if ((location.host == '') || (url.indexOf(location.host) == -1))
netscape.security.PrivilegeManager.enablePrivilege('UniversalConnect');
var urlObj = new java.net.URL (url);
var host = urlObj.getHost();
var port = (urlObj.getPort() > 0) ? urlObj.getPort() : 80;
var fileName = urlObj.getFile();
var sock = new java.net.Socket (host, port);
dock = new java.io.DataOutputStream(sock.getOutputStream());
dock.writeBytes('HEAD ' + fileName + ' HTTP/1.0\r\n');
dock.writeBytes('\r\n');
var dis = new java.io.DataInputStream(sock.getInputStream());
line = dis.readLine(); // get just status message
dis.close();
dock.close();
sock.close();
var statusObject = new StatusObject(line);
return statusObject;
}
function StatusObject (statusLine) {
var re = /(HTTP\/[\d\.]+) (\d\d\d) ?(.*)$/i;
var match = re.exec(statusLine);
this.protocol = match[1];
this.status = match[2];
this.message = match[3];
}
function checkURLStatus (url) {
if (document.getElementById && window.ActiveXObject) {
var http = new ActiveXObject('Microsoft.XMLHTTP');
http.open('HEAD', url, false);
http.send();
return http.status;
}
else if (document.layers && navigator.javaEnabled()) {
return fetchHTTPStatus(url).status
}
else
return null;
}
function checkLinks () {
for (var l = 0; l < document.links.length; l++) {
window.status = 'checking link ' + l;
var link = document.links[l];
var status = checkURLStatus(link.href);
if (status) {
if (document.all) {
if (status == 200)
link.insertAdjacentHTML('afterEnd', '<SUP><SPAN STYLE="color: green;">' + status + '<\/SPAN></SUP>');
else
link.insertAdjacentHTML('afterEnd', '<SUP><SPAN STYLE="color: red;">' + status + '<\/SPAN></SUP>');
}
else if (document.layers) {
link.ol = new Layer(20);
link.ol.document.open();
if (status == 200)
link.ol.document.write('<FONT COLOR="green">' + status + '<\/FONT>');
else
link.ol.document.write('<FONT COLOR="red">' + status + '<\/FONT>');
link.ol.document.close();
link.onmouseover = showStatus;
link.onmouseout = hideStatus;
}
}
}
window.status = '';
}
function showStatus (evt) {
evt.target.ol.left = evt.pageX;
evt.target.ol.top = evt.pageY;
evt.target.ol.visibility = 'show';
}
function hideStatus (evt) {
evt.target.ol.visibility = 'hide';
}
</SCRIPT>
</HEAD>
<BODY>
<input type=button name=bt value=링크체크하기 onclick=checkLinks()>
<br><br>
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</BODY>
</HTML>
