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 GetObj( Id )
{
	if( document.getElementById )
	{
		return document.getElementById( Id );
	}
	else if( document.all )
	{
		return document.all[ Id ];
	}
	else if( document.layers )
	{
		return document.layers[ Id ];
	}
}

function GetGeometry( Obj )
{
	var X = Y = 0;
	var Width = Obj.offsetWidth;
	var Height = Obj.offsetWidth;
	
	if( Obj.offsetParent ) 
	{
		X = Obj.offsetLeft;
		Y = Obj.offsetTop;
		
		while( Obj = Obj.offsetParent )
		{
			X += Obj.offsetLeft;
			Y += Obj.offsetTop;
		}
	}
	
	return [ X, Y, X + Width, Y + Height ];	
}

function AlignMenu( Parent, Menu )
{
	var ParentGeometry = GetGeometry( Parent );
	
	Menu.style.left = ParentGeometry[ 2 ] + "px";
	Menu.style.top = ParentGeometry[ 1 ] - 1 + "px";
}

//-------------------------------------------------------------------------------------------------

var MenuTimeout = 1000;

var CurrentMenuId = "";
var CurrentMenuTimeout;

function ShowMenu( ParentId, MenuId )
{
	var Parent = GetObj( ParentId );
	var Menu = GetObj( MenuId );

	if( CurrentMenuId != MenuId )
	{	
		HideCurrentMenu();
		AlignMenu( Parent, Menu );
		Menu.style.visibility = "visible";
	}	
	
	if( CurrentMenuTimeout )
	{
		clearTimeout( CurrentMenuTimeout );
	}

	CurrentMenuId = MenuId;
	CurrentMenuTimeout = setTimeout( "HideCurrentMenu()" , MenuTimeout );
}

function MenuKeepAlive( Id )
{
	if( CurrentMenuId == Id && CurrentMenuTimeout )
	{
		clearTimeout( CurrentMenuTimeout );
		CurrentMenuTimeout = setTimeout( "HideCurrentMenu()" , MenuTimeout );
	}
}

function HideCurrentMenu()
{
	if( CurrentMenuId != "" )
	{
		var Menu = GetObj( CurrentMenuId );
		Menu.style.visibility = "hidden";
		CurrentMenuId = "";
	}
}