function assignBehaviors() {
	var aTags = document.getElementsByTagName('a');
	for (var i=0; i<aTags.length; i++) {
		if (aTags[i].className == "screenshot") {
			aTags[i].href = "javascript:void(popImage('" + aTags[i].href + "'));";
			aTags[i].target = "_self";
		}
	}
}

function popImage(pic) {
	var path = pic.substring(0,pic.lastIndexOf('/')+1);
	var img = pic.substring(pic.lastIndexOf('/')+1);
	var url = path + 'preview.php?' + img;
	var w = 770;
	var h = 500;
	var t = (screen.height - h) / 2;
	var l = (screen.width - w) / 2;
	var portfolio = window.open(url,'preview','toolbar=no,location=no,scrollbars=no,status=no,menubar=no,resizable=yes,directories=no,personal=no,width='+w+',height='+h+',top='+t+',left='+l);
	if (portfolio == null || typeof(portfolio) == "undefined") alert("You have a pop-up window blocker installed which is blocking this link from displaying properly.\nPlease allow pop-ups for this site in order to view the portfolio pieces.");
}

function safariMenuFix() {
	if (BrowserDetect.browser == "Safari" || BrowserDetect.browser == "Opera") {
		var subMenuContainer = document.getElementById('subMenuContainer');
		var liTags = subMenuContainer.getElementsByTagName('li');
		for (var i=0; i<liTags.length; i++) {
			liTags[i].style.margin = "0";
		}
	}
}

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();

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}

addLoadEvent(safariMenuFix);
addLoadEvent(assignBehaviors);