// JavaScript Document
var divId="";
var divHtml="";

function GetXmlHttpObject(){
    var xmlHttp=null;
    try{      // Firefox, Opera 8.0+, Safari
       xmlHttp=new XMLHttpRequest();
    }catch(e){   // Internet Explorer
       try{ 
          xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");  // 6.0+
       }catch(e){
          xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");   // 5.0+
       }
    }
    return xmlHttp;
}

function getPageHTML(itemId,url){
//	alert(itemId+" , "+url);
	if (url == 'none'){
	   document.getElementById(itemId).innerHTML = "<center>En construcci&oacute;n...</center>";
	   return;
	}
	
	document.getElementById(itemId).innerHTML = "<center>Cargando...</center>";
    divId = itemId;
    var xmlHttp = GetXmlHttpObject();
	if (xmlHttp == null){
	   alert('Su navegador no soporta AJAX');
	   return;
    }
    xmlHttp.onreadystatechange=function(){
        if (xmlHttp.readyState==4){
           divHtml=xmlHttp.responseText;
		   displayHTML(itemId,divHtml);
		}
    }
	
    xmlHttp.open("GET",url,true);
    xmlHttp.send(null);
}

function displayHTML(itemId, itemHTML){
    document.getElementById(itemId).innerHTML = "";
    document.getElementById(itemId).innerHTML = itemHTML;
}