// JavaScript Document

	var peticion = false;

if (window.XMLHttpRequest) {
		  peticion = new XMLHttpRequest();
	} else if (window.ActiveXObject) {
		  peticion = new ActiveXObject("Microsoft.XMLHTTP");
	}

	function ObtenerDatos(datos,divID) {
		  if(peticion) {
				var obj = document.getElementById(divID);
				peticion.open("GET", datos);
				peticion.onreadystatechange = function()  {
					  if (peticion.readyState == 4) {
							obj.innerHTML = peticion.responseText;
					  }
				}
		  peticion.send(null);
		  }
	}
	
	function ActualizarDatos(datos,divID,id) {
		  if(peticion) {
			  	var valor = document.getElementById(id).value;
				var cad_datos=datos+'&valor_res='+valor+'&id_res='+id;
				var obj = document.getElementById(divID);
				peticion.open("GET", cad_datos);
				peticion.onreadystatechange = function()  {
					  if (peticion.readyState == 4) {
							obj.innerHTML = peticion.responseText;
					  }
				}
		  peticion.send(null);
		  }
	}
	function CambiarEstilo(id) {
		
		  var elementosMenu = getElementsByClassName(document, "a", "activo");
		  for (k = 0; k< elementosMenu.length; k++) {
				elementosMenu[k].className = "inactivo";
		  }
		  
		  if (id!=''){
		 	var identity=document.getElementById(id);
			 identity.className="activo";
		  }
	}
	function getElementsByClassName(oElm, strTagName, strClassName){
		  var arrElements = (strTagName == "*" && document.all)? document.all : oElm.getElementsByTagName(strTagName);
		  var arrReturnElements = new Array();
		  strClassName = strClassName.replace(/\-/g, "\\-");
		  var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
		  var oElement;
		  for(var i=0; i<arrElements.length; i++){
				oElement = arrElements[i];     
				if(oRegExp.test(oElement.className)){
					  arrReturnElements.push(oElement);
				}   
		  }
		  return (arrReturnElements)
	}