// JavaScript Document
function EchoMenu() {

navRoot = document.getElementById("mainNav");
for (i=0; i<navRoot.childNodes.length; i++) {
node = navRoot.childNodes[i];
if (node.nodeName=="LI") {
node.onmouseover=function() {
dropMenu2();
this.className=" over	";
  }
  node.onmouseout=function() {
  this.className="";
   }
   }
  }
 }


function dropMenu(objName)
{
obj = document.getElementById(objName);
obj.className=" over	";

if (objName != 'dd1'){
	obj = document.getElementById('dd1');
	obj.className="";
}
if (objName != 'dd2'){
	obj = document.getElementById('dd2');
	obj.className="";
}
if (objName != 'dd3'){
	obj = document.getElementById('dd3');
	obj.className="";
}
if (objName != 'dd4'){
	obj = document.getElementById('dd4');
	obj.className="";
}
if (objName != 'dd5'){
	obj = document.getElementById('dd5');
	obj.className="";
}

}

function dropMenu2()
{
obj = document.getElementById('dd1');
	obj.className="";
	
obj = document.getElementById('dd2');
	obj.className="";

obj = document.getElementById('dd3');
	obj.className="";

obj = document.getElementById('dd4');
	obj.className="";

obj = document.getElementById('dd5');
	obj.className="";

}

//function to make correct 3rd level drop down visible
//objName = dd id on asp 
//liNum = number of li in array that triggers next level (counting from 0)
function dropMenu3(objName, liNum)
{ 

obj = document.getElementById(objName);
obj.className = "over"

var ddl3 = document.getElementById(objName).getElementsByTagName("UL");
var li3 = ddl3[0].getElementsByTagName("LI");

li3[liNum].className="over"		

}


//function to make correct 3rd level drop down invisible
function dropMenu4(objName)
{ 

obj = document.getElementById(objName);

var ddl3 = document.getElementById(objName).getElementsByTagName("UL");
var li3 = ddl3[0].getElementsByTagName("LI");
for (var i=0; i<li3.length; i++) { 
li3[i].className=""		
}
}

//detect browser

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.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"
		},
		{	// 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();

//if not in opera, run function, else set next li to be visible
function checkOpera(){
	if (BrowserDetect.browser != "Opera"){
		dropMenu2()
		dropMenu4('dd5')
	}
	else{
		obj = document.getElementById("liOpera");
		obj.style.visibility="visible";	
	}
}