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

	addLoadEvent(initScroller);
	addLoadEvent(addFormPlaceholders);
	addLoadEvent(setToggleSubscribe);

/* Toggle Functions
---------------------------------------------------------- */

function setToggleSubscribe() {
	$('button-subscribe').onclick = function() {
		if($('subscribe').style.display == "none") {
			$('subscribe').style.display = "block";
			new Fx.Style('subscribe', 'opacity').start(0,1);
			return false;
		} else {
			new Fx.Style('subscribe', 'opacity').start(1,0);
			$('subscribe').style.display = "none";			
			return false;			
		}
	}
}

/* Search Form Placeholder
---------------------------------------------------------- */

function addFormPlaceholders() {
	
	var forms = document.getElementsByTagName('form');
	var textareas = document.getElementsByTagName('textarea');
	
	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 = "";
				}
			}
		}
	}
}


/* Browser/OS 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(); 
 

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

/* 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();
		}
	}
}