function include(filename, afterfunc) {
	  include.seq = (include.seq)? include.seq + 1: 1;
	  var id = new Date().getTime() + "-" + include.seq;
	  var inc = document.createElement("iframe");

	  inc.id = "inc-" + id;
	  inc.src = filename;
	  inc.style.display = "none";
	  document.write("<span id=\"" + id + "\"></span>");
	  var incfunc = function() {
	    var s = (function() {
	      var suffix = (n = filename.lastIndexOf(".")) >= 0 ? filename.substring(n): "default";
	      if (suffix == ".html") return inc.contentWindow.document.body.innerHTML;
	      if (suffix == ".cgi") return inc.contentWindow.document.body.innerHTML;
	      if (suffix == ".txt") return inc.contentWindow.document.body.firstChild.innerHTML;
	      return inc.contentWindow.document.body.innerHTML;
	    })();
	    var span = document.getElementById(id);
	    var insertBeforeHTML = function(htmlStr, refNode) {
	      if (document.createRange) {
	        var range = document.createRange();
	        range.setStartBefore(refNode);
	        refNode.parentNode.insertBefore(range.createContextualFragment(htmlStr), refNode);
	      } else {
	        refNode.insertAdjacentHTML('BeforeBegin', htmlStr);
	      }
	    };

	    insertBeforeHTML(s.split("&gt;").join(">").split("&lt;").join("<"), span);
	    document.body.removeChild(inc);
	    span.parentNode.removeChild(span);
	    if (afterfunc) afterfunc();
	  };

	  if (window.attachEvent) {
	    window.attachEvent('onload', 
	      function() {
	        document.body.appendChild(inc); 
	        inc.onreadystatechange = function() { if (this.readyState == "complete") incfunc(); };
	      });
	  }
	  else {
	    document.body.appendChild(inc);
	    inc.onload = incfunc;
	  }
	}