var BrowserDetect = {
	init: function () {
	    this.unknown = "unknown";
		this.browser = this.searchString(this.dataBrowser) || unknown;
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| unknown;
		this.OS = this.searchString(this.dataOS) || unknown;
	},
	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"
		},
		//{     // Don't know if we support these commented browsers.
		//      // Uncomment if we determine that they are compatible. 
		//  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"
		}
	]

};

function DayRange(date1, date2)
{
    this.start = (date1 < date2 ? date1 : date2);
	this.end = (date1 < date2 ? date2 : date1);
}
DayRange.prototype = {
    addDay: function(date)
    {
	    var newDate = new Date(Number(date));
	    newDate.setDate(newDate.getDate() + 1);
	    return newDate;
    },
    each: function(iterator)
	{
		for (var date = this.start; date <= this.end; date = this.addDay(date))
		{
			iterator(date);
		}
	},
	find: function(judge)
	{
	    var result;
	    this.each(function(date) { if (judge(date)) result = date; });
	    return result;
	}
};