function navRO(id){
	
	var obj = document.getElementById(id);
	var imgSrc = obj.src;
	
	// check if in RO state
	var state = imgSrc.search("-ro.");
	
	if (state < 0){
		
		var lenMinusExt = imgSrc.length - 4;
		var part1 = imgSrc.substr(0, lenMinusExt);
		var part2 = imgSrc.substr(lenMinusExt, imgSrc.length);
		
		obj.src = part1+"-ro"+part2;
		
	}
	
	else {
		
		obj.src = imgSrc.replace("-ro", "");
		
	}
	
}

function pleaseRegister(){
	var answer = confirm('You must register to view this file, click OK to proceed.');
	
	if (answer){
		//window.location = "information-resource.cfm?lastPg="+lastPg+"&guestbookCookieName="+guestbookCookieName;
		document.getElementById('reg-form').style.display = 'block';
	}
	else {}
}