// JavaScript Document

function changeFeature(lyrToChange,navLyr,contentLyr) {

	var targetElement = document.getElementById(lyrToChange);
	var targetNav = document.getElementById(navLyr);
	//hide all layers to ensure none are accidently left on
	var div1 = document.getElementById('featureDiv1');
	var div2 =document.getElementById('featureDiv2');
	var div3 =document.getElementById('featureDiv3');
	
	var anchor1 = document.getElementById('feature_nav1');
	var anchor2 = document.getElementById('feature_nav2');
	var anchor3 = document.getElementById('feature_nav3');
	
	anchor1.className='';
	anchor2.className='';
	anchor3.className='';
	
	div1.style.display='none';
	div2.style.display='none';
	div3.style.display='none';

	targetElement.style.display='block';

	targetNav.className="selected";
}