function addEvent( obj, type, fn ) {
  if ( obj.attachEvent ) {
    obj['e'+type+fn] = fn;
    obj[type+fn] = function(){obj['e'+type+fn]( window.event );}
    obj.attachEvent( 'on'+type, obj[type+fn] );
  } else
    obj.addEventListener( type, fn, false );
}
function removeEvent( obj, type, fn ) {
  if ( obj.detachEvent ) {
    obj.detachEvent( 'on'+type, obj[type+fn] );
    obj[type+fn] = null;
  } else
    obj.removeEventListener( type, fn, false );
}


/*
JSTarget function by Roger Johansson, www.456bereastreet.com
*/
var JSTarget = {
	init: function(att,val,warning) {
		if (document.getElementById && document.createElement && document.appendChild) {
			var strAtt = ((typeof att == 'undefined') || (att == null)) ? 'class' : att;
			var strVal = ((typeof val == 'undefined') || (val == null)) ? 'non-html' : val;
			var strWarning = ((typeof warning == 'undefined') || (warning == null)) ? ' (opens in a new window)' : warning;
			var oWarning;
			var arrLinks = document.getElementsByTagName('a');
			var oLink;
			var oRegExp = new RegExp("(^|\\s)" + strVal + "(\\s|$)");
			for (var i = 0; i < arrLinks.length; i++) {
				oLink = arrLinks[i];
				if ((strAtt == 'class') && (oRegExp.test(oLink.className)) || (oRegExp.test(oLink.getAttribute(strAtt)))) {
					oWarning = document.createElement("em");
					oWarning.appendChild(document.createTextNode(strWarning));
					oLink.appendChild(oWarning);
					oLink.onclick = JSTarget.openWin;
				}
			}
			oWarning = null;
		}
	},
	openWin: function(e) {
		var event = (!e) ? window.event : e;
		if (event.shiftKey || event.altKey || event.ctrlKey || event.metaKey) return true;
		else {
		    var oWin = window.open(this.getAttribute('href'), '_blank');
			if (oWin) {
				if (oWin.focus) oWin.focus();
				return false;
			}
			oWin = null;
			return true;
		}
	}
};

if(document.getElementById && document.createTextNode)
{
  addEvent(window, 'load', function(){JSTarget.init("class","external","");});
  addEvent(window, 'load', function(){JSTarget.init("rel","external","");});
  addEvent(window, 'load', function(){JSTarget.init("class","pdf","");});
}


//===============================================
// OVER LABELS
//===============================================
function initOverLabels() {
	if (!document.getElementById) return;

	var labels, id, field;

	// Set focus and blur handlers to hide and show labels with 'overlabel' class names.
	labels = document.getElementsByTagName('label');
	for (var i = 0; i < labels.length; i++) {

		if (labels[i].className == 'overlabel') {

			// Skip labels that do not have a named association with another field.
			id = labels[i].htmlFor || labels[i].getAttribute('for');

			if (!id || !(field = document.getElementById(id))) {
				continue;
			}

			// Change the applied class to hover the label over the form field.
			labels[i].className = 'overlabel-apply';

			// Hide any fields having an initial value.
			if (field.value !== '') {
				hideLabel(field.getAttribute('id'), true);
			}

			// Set handlers to show and hide labels.
			field.onfocus = function () {
				hideLabel(this.getAttribute('id'), true);
			};

			field.onblur = function () {
				if (this.value === '') {
					hideLabel(this.getAttribute('id'), false);
				}
			};

			// Handle clicks to label elements (for Safari).

			labels[i].onclick = function () {
				var id, field;
				id = this.getAttribute('for');

				if (id && (field = document.getElementById(id))) {
					field.focus();
				}
			};
		}
	}
};

function hideLabel (field_id, hide) {
	var field_for;
	var labels = document.getElementsByTagName('label');

	for (var i = 0; i < labels.length; i++) {
		field_for = labels[i].htmlFor || labels[i].getAttribute('for');

		if (field_for == field_id) {
			labels[i].style.textIndent = (hide) ? '-9999px' : '0px';
			return true;
		}
	}
}

window.onload = function () {
	setTimeout(initOverLabels, 50);
};



//===============================================
// BROWSER DETECT
//===============================================
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.userAgent,
			   subString: "iPhone",
			   identity: "iPhone/iPod"
	    },
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();


//===============================================
// PORTFOLIO IMAGE SWAP
//===============================================
function showThis(id, count) {

	var whichgallery = id.substr(6);
	var defaultimg = "image0" + whichgallery;

	if (id == defaultimg) {

		document.getElementById(defaultimg).style.visibility = "visible";

	}

	if (document.getElementById(id).style.display != "none") {

		return false;

	} else {

		Effect.Appear(id, { duration: 0.5 });

		if (id != defaultimg) {

			if (document.getElementById(defaultimg).style.visibility != "hidden") {
				Effect.Fade(defaultimg, { duration: 0.5 });
			}

		}

		var i = 1;

		for (i=1;i<=count;i++ ) {

			var whichone = "image" + i + whichgallery;

			if (document.getElementById(whichone).style.display == "none") {

				continue;

			} else {

				Effect.Fade(whichone, { duration: 0.5 });
				return false;

			}

		}

		if (id != defaultimg) {
			setTimeout(function(){ document.getElementById(defaultimg).style.visibility = "hidden"; }, 1000);
			setTimeout(function(){ document.getElementById(defaultimg).style.display = "none"; }, 1000);
		}

	}

	return false;

}