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();

	if(BrowserDetect.browser == 'Explorer') {
		if(BrowserDetect.version < 7) {
			var IE=true;
			var IE7=false;
		} else {
			var IE=false;
			var IE7=true;
		}
	} else {
		var IE = false;	
		var IE7 = false;
	}

	
	function dispElement(element) {
		if(element) {
			if(element.style.display != 'block') {
				element.style.display = 'block';
			}
		}
	}
	
	function hideElement(element) {
		if(element) {
			if(element.style.display != 'none') {
				element.style.display = 'none';
			}
		}
	}

	function showImageElements() {
		var photoMenu = document.getElementById('photoMenu')
		var infoButton = document.getElementById('infoButton')
		var mainPhoto = document.getElementById('mainPhotoContainer')
		if(photoMenu) {
			setTopLeft(photoMenu,mainPhoto,10,10);
			dispElement(photoMenu);
		}
		if(infoButton) {
			var offsetX = mainPhoto.style.width;
			var offsetY = mainPhoto.style.height;
			setTopLeft(infoButton,mainPhoto,650,400);
			dispElement(infoButton);
		}
	}
	
	function hideImageElements() {
		var photoMenu = document.getElementById('photoMenu')
		var infoButton = document.getElementById('infoButton')
		if (!e) var e = window.event;
		var relTarg = e.relatedTarget || e.toElement;
		if(relTarg.id != 'photoMenu' && relTarg.id != 'infoButton' && relTarg.id != 'photoDesc') {
			hideElement(photoMenu);
			hideElement(infoButton);
		}
	}
	
	function showPhotoDesc() {
		var photoDesc = document.getElementById('photoDesc')
		var photoDescBg = document.getElementById('photoDescBg')
		if(photoDesc.style.display == 'block') {
			hideElement(photoDesc);
			hideElement(photoDescBg);
		} else {
			setTopLeft(photoDesc,mainPhoto,25,375);
			setTopLeft(photoDescBg,mainPhoto,25,375);
			dispElement(photoDesc);
			dispElement(photoDescBg);
		}
	}
	
	function showBigThumb(photoSrc) {
		var bigThumb = document.getElementById('bigThumb')
		var bigThumbImg = document.getElementById('bigThumbImg')
		var mainPhoto = document.getElementById('mainPhotoContainer')
		if(bigThumb) {
			bigThumbImg.src = photoSrc;
			setTopLeft(bigThumb,mainPhoto,490,290);
			dispElement(bigThumb);
		}		
	}
	
	function hideBigThumb() {
		var bigThumb = document.getElementById('bigThumb')
		hideElement(bigThumb);
	}
	
	function findPos(obj) {
		var curleft = curtop = 0;
		if(obj) {
			if (obj.offsetParent) {
				curleft = obj.offsetLeft
				curtop = obj.offsetTop
				while (obj = obj.offsetParent) {
					curleft += obj.offsetLeft
					curtop += obj.offsetTop
				}
			}
		} else {
			curleft = 0;
			curRight = 0;
		}
		return [curleft,curtop];
	}
	
	function setTopLeft(obj,posObj,addX,addY) {
		if(obj) {
			if(posObj) {
				var coors = findPos(posObj);
				obj.style.left = coors[0] + parseInt(addX) + 'px';
				obj.style.top = coors[1] + parseInt(addY) + 'px';
			}
		}
	}
	
	function nextURL(url) {
		window.location=url;	
	}
	
	
	function setOpacity(element,value) {
		element.style.opacity = value/100;
		element.style.filter = 'alpha(opacity=' + value + ')';
		element.style.MozOpacity = value/100;
	}