// checar si el user esta usando el odioso intenet explorer
var IE=(navigator.userAgent.indexOf("MSIE")>=0)?1:0;
function returnXML(){
    var r=false;
    if(window.XMLHttpRequest){
        r=new XMLHttpRequest();
    }else if(window.ActiveXObject){
        try{
            r=new ActiveXObject("Microsoft.XMLHTTP");
        }catch(e){
            r=new ActiveXObject("Msxml2.XMLHTTP");
        }
    }
    return r;
}
function extractGET(){// v1.0 2006-05-16
    window.GET=new Array();
    if(window.location.search.length){
        var pares=window.location.search.substr(1).split("&");
        for(var i=0;i<pares.length;i++){
            var par=pares[i].split("=");
            window.GET[par[0]]=(isNaN(par[1]))?par[1]:parseFloat(par[1]);
        }
    }
}