no_cache management added

[brisk.git] / web / commons.js

diff --git a/web/commons.js b/web/commons.js
index f0ea078..99a2983 100644 (file)
--- a/web/commons.js
+++ b/web/commons.js
@@ -249,6 +249,7 @@ function send_mesg(mesg)
     
     // alert("xhr_wr: "+xhr_wr+"  is_conn: "+is_conn);
     xhr_wr.open('GET', 'index_wr.php?'+(is_conn ? 'sess='+sess+'&' : '')+'mesg='+mesg, (is_conn ? true : false));
+    xhr_wr.setRequestHeader("If-Modified-Since", new Date().toUTCString());
     xhr_wr.onreadystatechange = function() { return; };
     if (typeof(g_debug) == 'number' && g_debug > 0
         && typeof(console) == 'object' && typeof(console.log) == 'function') {