function NuevoAjax(){
        var xmlhttp=false;
        try{
                xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
        }catch(e){
                try{
                        xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
                }catch(E){
                        xmlhttp = false;
                }
        }

        if(!xmlhttp && typeof XMLHttpRequest!='undefined'){
                xmlhttp = new XMLHttpRequest();
        }
        return xmlhttp;
}

function Cargar(url,divName,urlNewWindow,method,valores){
	if(!method) {
		method="GET";
	}
        var contenido, preloader,ajax;
        contenido = document.getElementById(divName);
        preloader = document.getElementById('preloader_'+divName);
        //creamos el objeto XMLHttpRequest
        ajax=NuevoAjax(); 
        //peticionamos los datos, le damos la url enviada desde el link
        ajax.open(method, url,true); 
        ajax.onreadystatechange=function(){
                if(ajax.readyState==1){
                        preloader.innerHTML = "<img src='loading2.gif'>";
						contenido.innerHTML = "";
                }else if(ajax.readyState==4){
                        if(ajax.status==200){
								if(urlNewWindow!=''&&urlNewWindow!=null) {
									window.open(urlNewWindow);
								}
                                //mostramos los datos dentro de la div
                                contenido.innerHTML = ajax.responseText; 
								//urchinTracker(); //Google Analytics
								if(BrowserDetectAjax.browser=='Explorer') {
									//correctPNG();
								}
                                preloader.innerHTML = "";
								
                        }else if(ajax.status==404){
                                preloader.innerHTML = "Lo sentimos, la p&aacute;gina que solicit&oacute; no existe.";
								contenido.innerHTML = ""; 
                        }else{
                                //mostramos el posible error
                                preloader.innerHTML = "Error: "+ajax.status; 
                        }
                }
        }
		ajax.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
		if(method=="GET") {
	        ajax.send(null);
		} else {
			ajax.send(valores);
		}
}







var BrowserDetectAjax = {
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
		this.OS = this.searchString(this.dataOS) || "an unknown OS";
	},
	searchString: function (data) {
		for (var i=0;i<data.length;i++)	{
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
	},
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
	},
	dataBrowser: [
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari"
		},
		{
			prop: window.opera,
			identity: "Opera"
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab"
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{
			string: navigator.vendor,
			subString: "Camino",
			identity: "Camino"
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv"
		},
		{ 		// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla"
		}
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},
		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		},
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};