if(typeof(AC)=="undefined"){AC={};}

AC.Detector={

	getAgent:function(){
		return navigator.userAgent.toLowerCase();
	},


	isMac:function(userAgent){
		var agent=userAgent||this.getAgent();
		return!!agent.match(/mac/i);
	},

	isWin:function(userAgent){
		var agent=userAgent||this.getAgent();
		return!!agent.match(/win/i);
	},

	isWin2k:function(userAgent){
		var agent=userAgent||this.getAgent();
		return this.isWin(agent)&&(agent.match(/nt\s*5/i));
	},

	isWinVista:function(userAgent){
		var agent=userAgent||this.getAgent();
		return this.isWin(agent)&&(agent.match(/nt\s*6/i));
	},


	isWebKit:function(userAgent){
		var agent=userAgent||this.getAgent();
		return!!agent.match(/AppleWebKit/i);
	},

	isOpera:function(userAgent){
		var agent=userAgent||this.getAgent();
		return!!agent.match(/opera/i);
	},

	isIE:function(userAgent){
		var agent=userAgent||this.getAgent();
		return!!agent.match(/msie/i);
	},

	isIEStrict:function(userAgent){
		var agent=userAgent||this.getAgent();
		return agent.match(/msie/i)&&!this.isOpera(agent);
	},

	isFirefox:function(userAgent){
		var agent=userAgent||this.getAgent();
		return!!agent.match(/firefox/i);
	},

	isiPhone:function(userAgent){
		var agent=userAgent||this.getAgent();
		return!!agent.match(/iPhone/i);
	},


	isiTunesOK:function(userAgent){
		var agent=userAgent||this.getAgent();
		return this.isMac(agent)||this.isWin2k(agent);
	},

	isQTInstalled:function(){

		var qtInstalled=false;

		if(navigator.plugins&&navigator.plugins.length){

			for(var i=0;i<navigator.plugins.length;i++){

				var plugin=navigator.plugins[i];

				if(plugin.name.indexOf("QuickTime")>-1){
					qtInstalled=true;
				}
			}
		}else{
			qtObj=false;
			execScript('on error resume next: qtObj = IsObject(CreateObject("QuickTimeCheckObject.QuickTimeCheck.1"))','VBScript');
			qtInstalled=qtObj;
		}

		return qtInstalled;
	},

	getQTVersion:function(){

		var version="0";

		if(navigator.plugins&&navigator.plugins.length){
			for(var i=0;i<navigator.plugins.length;i++){

				var plugin=navigator.plugins[i];


				var match=plugin.name.match(/quicktime\D*([\.\d]*)/i);
				if(match&&match[1]){
				version=match[1];
			}
		}
	}else{
		ieQTVersion=null;

		execScript('on error resume next: ieQTVersion = CreateObject("QuickTimeCheckObject.QuickTimeCheck.1").QuickTimeVersion','VBScript');

		if(ieQTVersion){
			version=(ieQTVersion>>24).toString(16);
		}
	}

	return version;
},

isQTCompatible:function(required,actual){

	function areCompatible(required,actual){

		var requiredValue=parseInt(required[0])
			if(isNaN(requiredValue)){
			requiredValue=0;
		}

		var actualValue=parseInt(actual[0])
		if(isNaN(actualValue)){
			actualValue=0;
		}

		if(requiredValue==actualValue){
			if(required.length>1){
				return areCompatible(required.slice(1),actual.slice(1));
			}else{
				return true;
			}
		}else if(requiredValue<actualValue){
			return true;
		}else{
			return false;
		}
	}

	var expectedVersion=required.split(/\./);
	var actualVersion=actual?actual.split(/\./):this.getQTVersion().split(/\./);

	return areCompatible(expectedVersion,actualVersion);

},

	isValidQTAvailable:function(required){
		return this.isQTInstalled()&&this.isQTCompatible(required)
	}

};