function loadcontent(content, contentbox) {
	var xmlHttp;
	var contentbox = document.getElementById(contentbox);
	
	try {
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	} catch (e) {
		// Internet Explorer
		try {
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {
				alert("Su navegador no soporta AJAX!");
				return false;
			}
		}
	}


	xmlHttp.onreadystatechange = stateChanged;
	xmlHttp.open("GET",content,true);
	xmlHttp.send(null);

	function stateChanged() {
		if (xmlHttp.readyState==4) {
			contentbox.innerHTML = xmlHttp.responseText;
		}
	}
}