/*
 * Copyright 2006 OST-SYSTEMS. All rights reserved.
 */

function $(id) {
  return document.getElementById(id);
}

function clear(element) {
  while (element.firstChild != null) {
    element.removeChild(element.firstChild);
  }
}

function doRequest(params, command, callback, loadingId) {
  var xmlHttp = false;
  try {
    xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
  } catch (e) {
    try {
      xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
    } catch (e2) {
      xmlHttp = false;
    }
  }

  if (!xmlHttp && typeof XMLHttpRequest != 'undefined') {
    xmlHttp = new XMLHttpRequest();
  }
  if (xmlHttp) {
    if (loadingId) {
      var image = document.getElementById(loadingId)
      if (image) {
        //image.setAttribute("src", getHectorPath() + "images/loading.gif");
        //image.style.display = "inline";
        image.style.visibility = "visible";
      }  
    }
    url = "commands?command=" + escape(command);
    for (var key in params) {
      if (params[key] != null) {
        url += "&" + escape(key) + "=" + escape(params[key]);
      }
    }
    xmlHttp.open("GET", url, true);
    xmlHttp.onreadystatechange = function() {
      if (xmlHttp.readyState == 4) {
        if (loadingId) {
          var image = document.getElementById(loadingId)
          if (image) {
            //image.style.display = "none";
            image.style.visibility = "hidden";
          }  
        }
        if (callback) {
          callback(xmlHttp);
        }  
      }
    }
    try {
      xmlHttp.send(null);
    }
    catch (e) {
      if (loadingId) {
        var image = document.getElementById(loadingId)
        if (image) {
          //image.style.display = "none";
          image.style.visibility = "hidden";
        }  
      }
      if (callback) {
        callback(xmlHttp);
      }        
    }  
    return xmlHttp;
  }
}

function createXMLHttpRequest() {
  var xml_request;
		if (window.XMLHttpRequest) {
		  xml_request = new XMLHttpRequest();
		}
		else if (window.ActiveXObject) { // IE
          xml_request = new ActiveXObject("Microsoft.XMLHTTP");
        }
  return xml_request;      
}

var _ajaxHectorPath;
function getHectorPath() {
  if (_ajaxHectorPath) {
    return _ajaxHectorPath;
  }
  var path = window.hectorPath;
  if (!path) {
    path = location.protocol + "//" + location.host + location.pathname;
    var _hectorLastSlash = path.lastIndexOf("/");
    if (_hectorLastSlash >= 0) {
      path = path.substring(0, _hectorLastSlash) + "/";
    }
  }
  return path;  
}

function sendServerTest(callback, page) {
  var params = new Object();
  if (page) {
    params.page = page;
  }
  else {
    params.page = location.pathname;
  }  
  params.language = navigator.language;
  params.java = navigator.javaEnabled();
  if (document.referrer) {
    params.referrer = document.referrer;
  }
  params.query = location.search;
  try {
    params.width = top.screen.width;
    params.height = top.screen.height;
  }
  catch (e) {
    
  }  
  params.browser = BrowserDetect.browser;
  params.version = BrowserDetect.version;
  params.os = BrowserDetect.OS;
  var index = navigator.userAgent.indexOf("Gecko/"); 
  if (index >= 0) {
    params.gecko = navigator.userAgent.substring(index + 6, index + 14);
  }
  doRequest(params, "test", callback, null);  
}

//From Quirksmode - 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: "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"
		}
	]

};
BrowserDetect.init();