function multiExplorador(contextPath, estiloWeb){
        var cPath = contextPath;
        var eWeb = estiloWeb;
        var BrowserDetect = {
                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.userAgent,
                                subString: "Chrome",
                                versionSearch: "Chrome/",
                                identity: "Chrome"
                        },
                        {
                                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"
                        }
                ]

        };
        BrowserDetect.init();

        //document.write("<link href='<%=contextPath%>/<%=estilo_web%>/css/textos.css' rel='stylesheet' type='text/css />");
        //document.write("<link href='<%=contextPath%>/<%=estilo_web%>/css/botones.css' rel='stylesheet' type='text/css' />");

        //script para poner estilos distintos para cada navegador
        if(BrowserDetect.browser == "Firefox"){
                document.write("<link href='"+cPath+"/"+eWeb+"/css/cajasFirefox.css' rel='stylesheet' type='text/css' />");
        }else if(BrowserDetect.browser == "Explorer"){
                if(BrowserDetect.version>=8){
                  document.write("<link href='"+cPath+"/"+eWeb+"/css/cajas.css' rel='stylesheet' type='text/css' />");
                }else if(BrowserDetect.version>=7){
                  document.write("<link href='"+cPath+"/"+eWeb+"/css/cajas.css' rel='stylesheet' type='text/css' />");
                }else{
                  document.write("<link rel='stylesheet' href='"+cPath+"/"+eWeb+"/css/cajas.css' type='text/css' />");
                }
        }else if (BrowserDetect.browser == "Chrome"){
                document.write("<link href='"+cPath+"/"+eWeb+"/css/cajasChrome.css' rel='stylesheet' type='text/css' />");
        }else if (BrowserDetect.browser == "Safari"){
                document.write("<link href='"+cPath+"/"+eWeb+"/css/cajasSafari.css' rel='stylesheet' type='text/css' />");
        }else if (BrowserDetect.browser == "Opera"){
                document.write("<link href='"+cPath+"/"+eWeb+"/css/cajas.css' rel='stylesheet' type='text/css' />");
        }
}