function cargadatos(id){ 
	if(window.XMLHttpRequest) {
		objXml1 = new XMLHttpRequest(); // Gecko (Firefox, Moz), KHTML (Konqueror, Safari), Opera
	} else if(window.ActiveXObject) {
		objXml1 = new ActiveXObject("Microsoft.XMLHTTP"); // Internet Explorer		
	}					
	
	objXml1.open("GET", "sellos_ajax.php?id="+id  , true);  
	objXml1.onreadystatechange=function() {
	if (objXml1.readyState==4) {
		document.getElementById("datos_sello").innerHTML=objXml1.responseText; 
		}
	} 
	objXml1.send(null);		
}