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 == '.txt') {
				return inc.contentWindow.document.body.firstChild.innerHTML;
			}
			if (suffix == 'default') {
				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;
	}
}