function Utils(){}

/********************EVENTS********************/
Utils.stopEvent = function(e) {
	if (!e) var e = window.event;
	e.cancelBubble = true;
	if (e.stopPropagation) e.stopPropagation();
	if (e.preventDefault) e.preventDefault();
	e.returnValue = false;
}

Utils.eventTarget = function(e) {
	var targ;
	var e = eventObject(e);
	if (e.target) targ = e.target;
	else if (e.srcElement) targ = e.srcElement;
	if (targ.nodeType == 3) // defeat Safari bug
		targ = targ.parentNode;
	return targ;
}

Utils.eventObject = function(e) {
	if (!e) return window.event;
	else return e;
}

Utils.addEvent = function(obj,evt,fn) {
	if (obj.addEventListener)
		obj.addEventListener(evt,fn,false);
	else if (obj.attachEvent)
		obj.attachEvent('on'+evt,fn);
}

Utils.removeEvent = function(obj,evt,fn) {
	if (obj.removeEventListener)
		obj.removeEventListener(evt,fn,false);
	else if (obj.detachEvent)
		obj.detachEvent('on'+evt,fn);
}

/********************PATHS********************/
Utils.splitPath = function(pPath) {
	var fSplitQuery = pPath.split("?");
	var fSplit = fSplitQuery[0].split("/");
	var fBase = fSplit.pop();
	if (fSplitQuery.length > 1) fBase += "?" + fSplitQuery[1];
	var fDir = fSplit.join("/");
	return [fDir, fBase];
}

Utils.relativePath = function(pPath, pRelativeTo) {
	if (pPath.indexOf("http://") == 0) {
		if (pPath.indexOf(pRelativeTo) == 0) {
			return pPath.substr(pRelativeTo.length);
		} else {
		
		}
	} else {
		return pPath;
	}
}

/********************LOG********************/
Utils.log = function(pStr) {
	if (Utils.loggerFrame == null) {
		var fDiv = document.createElement("div");
		fDiv.setAttribute("style", "display:block;position:absolute;width:300px;height:200px;z-index:1000;border:1px solid black;color:black;background-color:white;right:1px;top:1px;");
		fDiv.ondblclick = Utils.hideLog;
		document.body.appendChild(fDiv);
		Utils.loggerFrame = fDiv;
	}
	Utils.loggerFrame.innerHTML += pStr + "<br />";
}

Utils.hideLog = function() {
	Utils.loggerFrame.parentNode.removeChild(Utils.loggerFrame);
	Utils.loggerFrame = null;
}

/********************BROWSER VERSION********************/
Utils.browserVersion = {
	init: function () {
		Utils.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		Utils.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
		Utils.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"
		}
	]
};