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();

$(document).ready(function(){
	$(".navi_level_2").hover (
		function() {},
		function() {
			$(".navi_level_2").fadeOut("fast");	
		}
	);

	$(".navi_level_1").hover(
		// Hover In
		function() {
			showSubNaviLayer(this.id);
		},
		function() {}
	);
});


function showSubNaviLayer(layerid) {
	
	var topOffeset = 2;
	
	if ((BrowserDetect.OS == 'Mac') && (BrowserDetect.browser == 'Safari')) {
		topOffeset = 3;
	}

	if ((BrowserDetect.OS == 'Windows') && (BrowserDetect.browser == 'Explorer') & (BrowserDetect.version == '7')) {
		topOffeset = 0;
	}
	
	$(".navi_level_2").fadeOut("fast");
	var main_id = layerid;
	var sub_id = main_id.replace("main", "sub");
	var main_offset = $("#" + main_id).offset();
	var main_left = main_offset.left;
	var main_width = $("#" + main_id).width();
	var main_top = main_offset.top;
	
	$("#" + sub_id).css({ "top": (main_top + topOffeset) + "px", "left": (main_left + main_width + 7) + "px"  });
	
	if ($("#" + sub_id + " ul").children().size() > 0) {
		$("#" + sub_id).fadeIn("fast");
	}
}