var utils = {
	isset: function(item)
	{
		return (typeof item != 'undefined');
	},

	empty: function(item)
	{
		return (typeof item == 'undefined' || item == '');
	},

	addslashes: function(str) 
	{
		str=str.replace(/\'/g,'\\\'');
		str=str.replace(/\"/g,'\\"');
		str=str.replace(/\\/g,'\\\\');
		str=str.replace(/\0/g,'\\0');
		return str;
	},

	stripslashes: function(str) 
	{
		str=str.replace(/\\'/g,'\'');
		str=str.replace(/\\"/g,'"');
		str=str.replace(/\\\\/g,'\\');
		str=str.replace(/\\0/g,'\0');
		return str;
	},
	
	trim: function(str)
	{
        return str.replace(/(?:^\s+|\s+$)/g, "");
	},
	
	isString: function(str)
	{
	    return (isNaN(str));
	},
	
	isInt: function(i)
	{
	    return (typeof i == 'number');
	},
	
	isNumber: function(i)
	{
	    return this.isInt(i);
	},
	
	isArray: function(item)
	{
	    return (item.constructor == 'Array()');
	},
	
	isObject: function(item)
	{
	    return (item.constructor == 'Object()');
	}

}

Object.prototype.isString   = function(item){ return (isNaN(item) && typeof item == 'string'); }
Object.prototype.isInt      = function(item){ return (typeof item == 'number'); }
Object.prototype.isNumber   = function(item){ return this.isInt(item); }
Object.prototype.isset      = function(item){ return (typeof item != 'undefined'); }
Object.prototype.empty      = function(item){ return (typeof item == 'undefined' || item == ''); }

var Window = {
  reload:   function()  { window.location.href = window.location.href; },
  href:     function()  { return window.location.href; },
  location: function()  { window.location.href = arguments[0]; }
};

var Browser = {
	init: function () {
		this.Name = 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"
		}
	]

};

Browser.init();