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: "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"
		}
	]

};
BrowserDetect.init();

function displayOptions(obj,BrowserDetect)
{
	var existing_club 			= document.getElementById('existing_club_no');
	var join_club_table 		= document.getElementById('join_club_table');
	var non_existing_club_no 	= document.getElementById('non_existing_club_no');
	
	var value 					= obj.value;
	if (obj.id == "existing_member")
	{
		var join_club		    = document.getElementById('join_club');
		if (BrowserDetect.browser == "Explorer")
		{			
			if (value == "" || value == "Y")
			{
				non_existing_club_no.style.display = "none";
			}
			existing_club.style.display 		= (value == "Y") ? "block" : "none";
			join_club_table.style.display 		= (value == "N") ? "block" : "none";
			if (value == "N" && join_club.value == "Y" && join_club_table.style.display == "block")
			{
				non_existing_club_no.style.display = "block";
			}
			
		}
		else
		{
			existing_club.style.display 	= (value == "Y") ? "table" : "none";
        	join_club_table.style.display 	= (value == "N") ? "table" : "none";
        	if (value == "" || value == "Y")
			{
				non_existing_club_no.style.display = "none";
			}
			if (value == "N" && join_club.value == "Y" && join_club_table.style.display == "table")
			{
				non_existing_club_no.style.display = "table";
			}
		}
	}
	
	if (obj.id == "join_club")
	{
		if (BrowserDetect.browser == "Explorer")
		{	
			if (join_club_table.style.display == "block")
			{		
				non_existing_club_no.style.display 		= (value == "Y") ? "block" : "none";
			}
		}
		else
		{
			if (join_club_table.style.display == "table")
			{
				non_existing_club_no.style.display 		= (value == "Y") ? "table" : "none";
			}
		}
	}
}

window.onload = function()
{
	if (document.my_account)
	{
        displayOptions(document.my_account.existing_member,BrowserDetect)
		displayOptions(document.my_account.join_club,BrowserDetect);
	}
}