// browserDetect.js
//
// This script comes from http://www.quirksmode.org/js/detect.html
// Once loaded os, browser, and browserversion are available as the vars
// BrowserDetect.OS
// BrowserDetect.browser
// BrowserDetect.version

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();

function windowMeasure() {
	d = document;
	w = window;
	iebody = d.compatMode && d.compatMode != 'BackCompat' ? d.documentElement : d.body;	
	
	b = d.body;
	xScroll = (w.innerWidth && w.scrollMaxX) ? w.innerWidth + w.scrollMaxX : Math.max(b.scrollWidth, b.offsetWidth);
	yScroll = (w.innerHeight && window.scrollMaxY) ? w.innerHeight + w.scrollMaxY : Math.max(b.scrollHeight, b.offsetHeight);
	pageWidth = (BrowserDetect.browser=='Explorer') ? iebody.scrollWidth : (d.documentElement.clientWidth || self.innerWidth);
    pageHeight = (BrowserDetect.browser=='Explorer') ? Math.max(iebody.scrollHeight, iebody.clientHeight) : (d.documentElement.clientHeight || self.innerHeight);
	
	width = (BrowserDetect.browser=='Explorer') ? iebody.clientWidth : (d.documentElement.clientWidth || self.innerWidth);
	height = (BrowserDetect.browser=='Explorer') ? iebody.clientHeight : self.innerHeight;
	
	return {
		pageWidth: Math.max(pageWidth, xScroll),
		pageHeight: Math.max(pageHeight, yScroll),
		width: width,
		height: height,		
		scrollLeft: (BrowserDetect.browser=='Explorer') ? iebody.scrollLeft : pageXOffset,
		scrollTop: (BrowserDetect.browser=='Explorer') ? iebody.scrollTop : pageYOffset
		}
	}