var xmlHttp;
function cambia(cat)
{
    var valor = cat;	
    var url="categorias.asp?cat="+valor
   // var url2="lng.asp?id="+valor
    xmlHttp=GetXmlHttpObject(stateChanged)
    //xmlHttp2=GetXmlHttpObject(stateChanged2)
    xmlHttp.open("GET", url , true)
    //xmlHttp2.open("GET", url2 , true)
    xmlHttp.send(null);
   // xmlHttp2.send(null);

}
 
 
function stateChanged()
{
    if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
    {
             document.getElementById("iconos").innerHTML = xmlHttp.responseText;


    }
}

function stateChanged2()
{
    if (xmlHttp2.readyState==4 || xmlHttp2.readyState=="complete")
    {
             rehash(unescape(xmlHttp2.responseText));


    }
}

 
function GetXmlHttpObject(handler)
{
    var objXmlHttp=null
 
    if (navigator.userAgent.indexOf("Opera")>=0)
    {
        alert("Opera not supported...")
        return;
    }
    if (navigator.userAgent.indexOf("MSIE")>=0)
    {
        var strName="Msxml2.XMLHTTP"
        if (navigator.appVersion.indexOf("MSIE 5.5")>=0)
        {
            strName="Microsoft.XMLHTTP"
        }
        try
        {
            objXmlHttp=new ActiveXObject(strName)
            objXmlHttp.onreadystatechange=handler
            return objXmlHttp
        }
        catch(e)
        {
            alert("Error. Scripting for ActiveX might be disabled")
            return
        }
    }
    if (navigator.userAgent.indexOf("Mozilla")>=0)
    {
        objXmlHttp=new XMLHttpRequest()
        objXmlHttp.onload=handler
        objXmlHttp.onerror=handler
        return objXmlHttp
    }
}