var openMenu=null;
var menuTimer=null;

function el(elm)
	{
	var ret=document.getElementById(elm);
	if (ret)
		{ return ret; }
	else
		{ return null; }
	}
	
function hideshow(elm,vis)
	{
	if (!elm) { return; }
	if ((elm.style.display!=vis))
		{ elm.style.display=vis; }
	}
	
function startTimeout(dur)
	{ 
	if (menuTimer) { return; }
	menuTimer= setTimeout("hideMenu()", dur); 
	//log.info('set: ' + menuTimer); 
	}
	
function resetTimeout()
	{
	if (menuTimer) 
		{
		//log.info('REset: ' + menuTimer); 		
		clearTimeout(menuTimer);
		}
	menuTimer = null;
	}
	
function hideMenu()
	{
	if (openMenu)
		{ hideshow(openMenu, 'none'); }
	openMenu=null;
	menuTimer=null;
	} 

function showMenu(id)
	{
	var newMenu=el("menu" + id);
	if (newMenu==openMenu) { return;}
	if (!newMenu) { return; }
	if (openMenu)
		{ hideMenu(); }
	openMenu=newMenu;
	if (BrowserDetect.browser=="Explorer")
		{ newMenu.style.top="65px"; }
	hideshow(openMenu, "block"); 
	resetTimeout();
	}
	
function openPhoto(i)
	{
	artPhoto = window.open("photo.asp?aid="+i, "artPhoto", "resizable=yes,status=no,scrollbars=yes, width=100, height=100");
	artPhoto.focus();
	}
	
function openQT(i)
	{
	artVideo = window.open("video.asp?vid="+i, "artVideo", "resizable=no, status=no, scrollbars=no, width=200, height=165");
	artVideo.focus();
	}
	
function popWindow() 
	{
	// new url,winname, width, height
	args=popWindow.arguments;
	//sizestr='width='+args[2];
	w=args[2];
	h=args[3];
	s=args[4];
	r=args[5];
	if (s=='scroll')
		{scrollbar=",scrollbars=yes";}
	else
		{
		scrollbar="";
		if (w>=screen.width)
			{ 
			w=screen.width-100; 
			scrollbar=",scrollbars=yes";
			}
		if (h>=screen.height)
			{ 
			h=screen.height-150; 
			scrollbar=",scrollbars=yes";
			}
		}
	if (r=='resize')
		{scrollbar+=",resizable=yes";}
	sizestr='width='+w;
	sizestr+=',height='+h;
	midx=(screen.width - w) / 2;
	midy=(screen.height - h) / 2;
	sizestr+=',left='+midx;
	sizestr+=',top='+midy;
	sizestr+=scrollbar;
  	popupWin = window.open(args[0], args[1], sizestr)
	}
	
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.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();