/*-------------------------- BROWSER DETECTION --------------------------*/

function dom_browser() {
	// browser identification based on dom capabilities
	this.myNav = this.navigator;
	this.version = this.navigator.appVersion;
	this.name = this.navigator.appName;
	this.userAgt = this.navigator.userAgent;
	this.ns4 = (document.layers) ? true : false;
	this.ns6 = (this.navigator.userAgent.indexOf("Netscape6") != -1) ? true : false;
	this.dom = (document.getElementById) ? true : false;
	this.ie4 = (document.all) ? true : false;
	this.mac = (this.version.indexOf("Mac") != -1) ? true : false;
	this.ie = (this.version.indexOf("MSIE") != -1) ? true : false;
	this.windows = (this.version.indexOf("Windows") != -1) ? true : false;
	this.hasPlugins = (this.navigator.plugins) ? true : false;
	this.ie6 = (this.version.indexOf("MSIE") != -1 && this.version.indexOf("6") != -1) ? true : false; 
	
	this.ie55 = (this.version.indexOf("MSIE 5.5") != -1) ? true : false;
	this.ie5 = (this.version.indexOf("MSIE 5.01") != -1) ? true : false;
	this.ns = (this.userAgt.indexOf("Netscape") != -1) ? true : false;
	this.ff = (this.userAgt.indexOf("Firefox") != -1) ? true : false;
	this.safari = (this.userAgt.indexOf("Safari") != -1) ? true : false;
}

dom_browser();	
		
// function to set default text to input fields
function setValue(myObj) { // when users click on user and keyword fields, default text disappears
			if(myObj.value == "myname@email.com" || myObj.value == "enter your email address to be notified of breaking news as it happens") {
				myObj.value = "";
			}
		}	
		function checkValue(myObj,defaultValue) { // if user has not entered any value, default value is restored
			if(myObj.value == "") {
				myObj.value = defaultValue;
			}
		}		
		
startList = function() {
		if (document.all&&document.getElementById) {
		navRoot = document.getElementById("nav");
		for (i=0; i<navRoot.childNodes.length; i++) {
		node = navRoot.childNodes[i];
		if (node.nodeName=="LI") {
		node.onmouseover=function() {
		this.className+=" over";
		  }
		  node.onmouseout=function() {
		  this.className=this.className.replace(" over", "");
		   }
		   }
		  }
		 }
		}
		window.onload=startList;