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.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();

function checkBrowser() {
  if (BrowserDetect.browser != 'Explorer' && BrowserDetect.browser != 'Firefox') {
	  return false;
	} else {
	  return true;
	}
}

function writeNav() {
  if (checkBrowser()) {
	  document.write('<ul class="top-nav">'+
                   '<li class="prosp-students"><a href="#" onclick="return apy_popup(0, 2500, event);">Prospective Students</a></li>'+
                   '<li class="online-learning"><a href="#" onclick="return apy_popup(4, 2500, event);">Special Programs</a></li>'+
                   '<li class="students"><a href="#" onclick="return apy_popup(1, 2500, event);">Students</a></li>'+
                   '<li class="faculty-staff"><a href="#" onclick="return apy_popup(2, 2500, event);">Faculty/Staff</a></li>'+
                   '<li class="alumni-friends"><a href="#" onclick="return apy_popup(3, 2500, event);">Alumni &amp; Friends</a></li>'+
                   '</ul>');
	} else {
	  document.write('<ul class="top-nav">'+
                   '<li class="prosp-students"><a href="/prospective.csc">Prospective Students</a></li>'+
                   '<li class="online-learning"><a href="/specialprograms.csc">Special Programs</a></li>'+
                   '<li class="students"><a href="/students.csc">Students</a></li>'+
                   '<li class="faculty-staff"><a href="/facultystaff.csc">Faculty/Staff</a></li>'+
                   '<li class="alumni-friends"><a href="/alumnifriends.csc">Alumni &amp; Friends</a></li>'+
                   '</ul>');
	}
  
}

function writeAthleticsNav() {
  if (checkBrowser()) {
		document.write('<map name="Map" id="Map">'+
		               '<area alt="Prospective Students" shape="poly" coords="92,248,97,288,259,264,252,230" href="#" onclick="return apy_popup(0, 2000, event);" />'+
		               '<area alt="Special Programs" shape="poly" coords="259,229,264,263,396,244,388,213" href="#" onclick="return apy_popup(4, 2000, event);" />'+ 
		               '<area alt="Students" shape="poly" coords="395,212,401,244,481,232,475,202" href="#" onclick="return apy_popup(1, 2000, event);" />'+ 
		               '<area alt="Faculty/Staff" shape="poly" coords="480,201,487,231,591,215,585,190" href="#" onclick="return apy_popup(2, 2000, event);" />'+
		               '<area alt="Alumni & Friends" shape="poly" coords="590,189,596,215,738,193,735,171" href="#" onclick="return apy_popup(3, 2000, event);" />'+
		               '</map>'); 
  } else {
	  document.write('<map name="Map" id="Map">'+
		               '<area alt="Prospective Students" shape="poly" coords="92,248,97,288,259,264,252,230" href="/prospective.csc" />'+
		               '<area alt="Special Programs" shape="poly" coords="259,229,264,263,396,244,388,213" href="/specialprograms.csc" />'+ 
		               '<area alt="Students" shape="poly" coords="395,212,401,244,481,232,475,202" href="/students.csc" />'+ 
		               '<area alt="Faculty/Staff" shape="poly" coords="480,201,487,231,591,215,585,190" href="/facultystaff.csc" />'+
		               '<area alt="Alumni & Friends" shape="poly" coords="590,189,596,215,738,193,735,171" href="/alumnifriends.csc" />'+
		               '</map>'); 
	}
}