/* Global Functions 
------------------------------------------------------------- */

function prepareImageGallery() {
	if(!document.getElementById('imageGallery'))
		return;
	
	var thumbLinks = document.getElementById('imageGallery').getElementsByTagName('ul')[0].getElementsByTagName('a');
	var showCaseImage = document.getElementById('showcase').getElementsByTagName('img')[0];
	
	for(var i=0; i<thumbLinks.length; i++) {
		thumbLinks[i].onclick = function() {
			showCaseImage.setAttribute('src',this.getAttribute('href'));
			return false;
		}
	}
}

function init() {
	var url = window.location + "";

	if(url.indexOf("project_page") != -1) {
		prepareImageGallery();
		return;
	}
}

addLoadEvent(init);

/* Helper Functions
------------------------------------------------------------- */


	function returnClass(e) {
		if(e.getAttribute('className'))
			return e.getAttribute('className');
		else
			return e.getAttribute('class');
	}
 
	 /* Search Form Placeholder */

	function addFormPlaceholders() {
		var forms = document.getElementsByTagName('form');
			
		for(var x=0; x<forms.length; x++) {
			for(var y=0; y<forms[x].elements.length; y++) {
				if(forms[x].elements[y].getAttribute('type') == "text") {
					forms[x].elements[y].onblur = function() {
						if(this.value == "")
							this.value = this.defaultValue;
					}

					forms[x].elements[y].onfocus = function() {
					this.value = "";
					}
				}
			}
		}
	}	
	
	/* Calls the function when the page loads (thanks: Jeremy Keith) */
	function addLoadEvent(func) {
		var oldonload = window.onload;
		if(typeof window.onload != 'function') {
			window.onload = func;
		} else {
			window.onload = function() {
				oldonload();
				func();
			}
		}
	}

	/* Inserts the given class after the target class (thanks: Jeremy Keith) */
	function insertAfter(newElement, targetElement) {
		var parent = targetElement.parentNode;
		if(parent.lastChild == targetElement) {
			parent.appendChild(newElement);
		} else {
			parent.insertBefore(newElement, targetElement.nextSibling);
		}
	}
	
	/* Adds a class to the page (thanks: Jeremy Keith) */
	function addClass(element,value) {
		if(!element.className) {
			element.className = value;
		} else {
			newClassName = element.className;
			newClassName += " ";
			newClassName += value;
			element.className = newClassName;
		}
	}
 
/* Browser Sniffing
---------------------------------------------------------- */

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();


/* Window Load Events
------------------------------------------------------------- */

addLoadEvent(addFormPlaceholders);