var d=document;							// Shorthand for our document
  var ImgPreloadImages = new Array();		// Save preload images here
  var ImgPreloadRetryCt=0;					// Actual num attempts to check preloads complete
  var ImgPreloadRetryMax=500;				// Max checks before declare problem
  var ImgPreloadWaitInterval=20;			// Milliseconds between checks

function getArgs()
{
  var args = new Object();
  var query = location.search.substring(1);		// get query string
  var pairs = query.split("&");					// ampersand delimiter
  for (var i = 0; i < pairs.length; i++)
  {
    var pos = pairs[i].indexOf('=');			// look for "name=value"
	if (pos == -1) continue;					// if not found, skip
	var argname = pairs[i].substring(0,pos);	// extract the name
	var value = pairs[i].substring(pos+1);		// extract the value
	args[argname] = unescape(value);			// store as a property
  }
  return args;
}

// ChangeImage - Changes the image displayed in an image object.
// Especially useful for highlighting and dimming buttons on MouseOver and MouseOut
function ChangeImage(ImgName,ImgFile)
{
document.getElementById(ImgName).src = ImgFile;
}

// PreloadImages - Loads images into local arrays which may change.
// Typically used for menu buttons.
// Insures that all necessary images are preloaded and the user is not waiting for an
// image to download on something as simple as a menu button mouse-over.
function PreloadImages()
{
  if(document.images)			// Are there any images?
  {
    var i, a=PreloadImages.arguments;
    for(i=0; i<a.length; i++)
	{
      ImgPreloadImages[i] = new Image;
      ImgPreloadImages[i].src = a[i];
	  ImgPreloadRetryCt=0;
	}
    setTimeout("PreloadImagesCompleteCheck(" + a.length + ")",ImgPreloadWaitInterval);
  }
}

// PreloadImagesCompleteCheck insures that all images requested for preloading have
// actually been loaded before returning.

function PreloadImagesCompleteCheck(NumArgs)
{
  var i;
  for(i=0; i<NumArgs; i++)
  {
    if (!ImgPreloadImages[i].complete)
	{
	  if (ImgPreloadRetryCt++ < ImgPreloadRetryMax)
        setTimeout("PreloadImagesCompleteCheck(" + NumArgs + ")",ImgPreloadWaitInterval);
//      else
//        d.write("Preload image timeout on image #" + i + ".  Max retry: " + ImgPreloadRetryMax + "<br>"  );
	}
  }
}

// Gives browser name, browser version and platform operating system
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.userAgent,
			   subString: "iPhone",
			   identity: "iPhone/iPod"
	    },
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};

BrowserDetect.init();