function xmlhttp(){
		var xmlhttp;
		try{xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");}
		catch(e){
			try{xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");}
			catch(e){
				try{xmlhttp = new XMLHttpRequest();}
				catch(e){
					xmlhttp = false;
				}
			}
		}
		if (!xmlhttp) 
				return null;
			else
				return xmlhttp;
	}

function buscar(){
	
	var query = document.getElementById('q').value;
	var A = document.getElementById('resultados');
	var B = document.getElementById('loading');
	var ajax = xmlhttp();

	A.innerHTML = '<center><img src="images/loading.gif" /> Procesando...</center>';
 
	ajax.onreadystatechange=function(){
	  /*
	  if(ajax.readyState==1){
		B.innerHTML = "<img src='images/loading.gif' alg='Loading...'>";
	  }
	  */
	  if(ajax.readyState==4){
		 A.innerHTML = ajax.responseText;
		 /*B.innerHTML = "";*/
	  }
	}
	ajax.open("GET","busqueda-noticia.php?q="+encodeURIComponent(query),true);
	ajax.send(null);
	return false;
	
}