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: "Chrome",
			identity: "Chrome"
		},
		{ 	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"
		}
	]

};
BrowserDetect.init();

var flipped;
var adClosed = false;

function showAd()
{
	
	
	if(adClosed != true || adClosed == nill){
		if(BrowserDetect.browser == "Safari" || BrowserDetect.browser == "Chrome"){
			startAdAnimation();
		}else{
			
			var vurlWebpage = document.location.href;
			var vdivider = "?";
			var vurlWebpage = vurlWebpage.split( vdivider );
			var vvget = false; 

				if(vurlWebpage[1]){
			    	var vget = new Array();
			    	var vset = vurlWebpage[1].split("&");
			    	for(i = 0; i < vset.length; i++){
			    	    var vparameter = vset[i].split("=");
			    	    vget[ parameter[0] ] = vparameter[1];
			   		}
			    	vvget = true;
			}
			
			if(vvget == true){
				if(vget['ad'] != 'no'){
					reloadThickboxjes();
					tb_show(null, "/GvL/GvLad.html?width=700", false);
					this.blur();
				}
				
			}else{
				reloadThickboxjes();
				tb_show(null, "/GvL/GvLad.html?width=700", false);
				this.blur();
			}
				
		 
		}
	}else{ 
		alert('add can not be showed');
	}
	
}


function startAdAnimation(){
	
	//Google chrome doesn't have -webkit-backface-visibility so we need te set it to hidden
	if(BrowserDetect.browser == "Chrome"){
		document.getElementById("back").setAttribute("style", "visibility: hidden;");
	}
	
	var GvLAd = document.getElementById("GvLAd");

	//make the ad visible
	GvLAd.setAttribute("style", "left: 400px; top: 200px; visibility: visible;");

	//animation, rotate and scale to normal size and the center of the screen
	var adImage;
	adImage = document.getElementById("coverImage");
	adImage.setAttribute("style", "-webkit-transform: rotate(360deg) scale(1.0); width:250px; height:346px;")
	
	//after animation set the card css style
	var card = document.getElementById("card");
	card.setAttribute("style","position: absolute; height: 276px; width:300px;");
	
	
}



function flip (event)
{
	var element = event.currentTarget;
	/* Toggle the setting of the classname attribute */
	element.className = (element.className == 'card') ? 'card flipped' : 'card';
	//set the flipping state for google chrome
	flipped = (element.className == 'card') ? true : false;

	//If it's Google Chrome then use custom visibility settings because -webkit-backface-visibility
	if(BrowserDetect.browser == "Chrome"){
		setTimeout ( "gChrome()", 500 );
	}

	
}



function gChrome(){

	if(flipped)
	{
		document.getElementById('front').setAttribute("style", "visibility : visible;");
		document.getElementById('back').setAttribute("style", "visibility : hidden;");
	}else{
		document.getElementById('front').setAttribute("style", "visibility : hidden;");
		document.getElementById('back').setAttribute("style", "visibility : visible;");
	}
	
}

function closeAd(){
	adClosed = true;
	
	var element = document.getElementById("GvLAd");
	element.parentNode.removeChild(element);

}