//detección del navegador por http://www.quirksmode.org/js/detect.html

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: "Chrome",
			identity: "Chrome"
		},
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari",
			versionSearch: "Version"
		},
		{
			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();

//script para poner estilos distintos para cada navegador
if (BrowserDetect.browser == "Firefox") {
    document.write("<LINK REL='stylesheet' HREF='css/default.css' TYPE='text/css'>");
}
else {
    if (BrowserDetect.browser == "Explorer"){
       if (BrowserDetect.version >= 8){
          document.write("<LINK REL='stylesheet' HREF='css/default.css' TYPE='text/css'>");
       }else if (BrowserDetect.version == 7){
		  document.write("<LINK REL='stylesheet' HREF='css/ie7.css' TYPE='text/css'>");
	   }else{
			document.write("<LINK REL='stylesheet' HREF='css/ie7.css' TYPE='text/css'>");
	   }
    }else{
       if (BrowserDetect.browser == "Opera"){
          if (BrowserDetect.version<9){
             document.write("<LINK REL='stylesheet' HREF='css/default.css' TYPE='text/css'>");
          }else{
             document.write("<LINK REL='stylesheet' HREF='css/default.css' TYPE='text/css'>");
          }
       }else{
          document.write("<LINK REL='stylesheet' HREF='css/default.css' TYPE='text/css'>");
       }
    }
}