var dom = (document.getElementById)? true:false
var ns4 = (document.layers)? true:false
var ie4 = (document.all)? true:false
	
	function navOn(lyr,main){
	
	if(dom){
	if(document.getElementById("home")){document.getElementById("home").className = "navLink";}
	if(document.getElementById("quote")){document.getElementById("quote").className = "navLink";}
	if(document.getElementById("offers")){document.getElementById("offers").className = "navLink";}
	if(document.getElementById("fleet")){document.getElementById("fleet").className = "navLink";}
	if(document.getElementById("locations")){document.getElementById("locations").className = "navLink";}
	if(document.getElementById("services")){document.getElementById("services").className = "navLink";}
	if(document.getElementById("travel")){document.getElementById("travel").className = "navLink";}
	if(document.getElementById("about")){document.getElementById("about").className = "navLink";}
	if(document.getElementById("business")){document.getElementById("business").className = "navLink";}
	if(document.getElementById(main)){document.getElementById(main).className = "navSelected";}
	
	if(document.getElementById("navHome")){document.getElementById("navHome").style.display = "none";}
	if(document.getElementById("navRates")){document.getElementById("navRates").style.display = "none";}
	if(document.getElementById("navOffers")){document.getElementById("navOffers").style.display = "none";}
	if(document.getElementById("navFleet")){document.getElementById("navFleet").style.display = "none";}
	if(document.getElementById("navLocations")){document.getElementById("navLocations").style.display = "none";}
	if(document.getElementById("navServices")){document.getElementById("navServices").style.display = "none";}
	if(document.getElementById("navTravel")){document.getElementById("navTravel").style.display = "none";}
	if(document.getElementById("navAbout")){document.getElementById("navAbout").style.display = "none";}
	if(document.getElementById("navBusiness")){document.getElementById("navBusiness").style.display = "none";}
	if(document.getElementById(lyr)){document.getElementById(lyr).style.display = "block";}
	}
	
	if(ie4 && dom==false){
	document.all["navHome"].style.visibility = "hidden";
	document.all["navRates"].style.visibility = "hidden";
	document.all["navOffers"].style.visibility = "hidden";
	document.all["navFleet"].style.visibility = "hidden";
	document.all["navLocations"].style.visibility = "hidden";
	document.all["navServices"].style.visibility = "hidden";
	document.all["navTravel"].style.visibility = "hidden";
	document.all["navAbout"].style.visibility = "hidden";
	document.all["navBusiness"].style.visibility = "hidden";
	document.all[lyr].style.visibility = "visible";
	}
	
	if(ns4){
	document.layers["navHome"].visibility = "hide";
	document.layers["navRates"].visibility = "hide";
	document.layers["navOffers"].visibility = "hide";
	document.layers["navFleet"].visibility = "hide";
	document.layers["navLocations"].visibility = "hide";
	document.layers["navServices"].visibility = "hide";
	document.layers["navTravel"].visibility = "hide";
	document.layers["navAbout"].visibility = "hide";
	document.layers["navBusiness"].visibility = "hide";
	document.layers[lyr].visibility = "show";
	}
	
	}