function drop_down(){
	
	if(navigator.appName == "Netscape"){
	
		var show = document.getElementById("firefox_drop_down");		
		show.style.visibility = "visible";
		show.style.display = "block";
		
	}
	
}

function disappear(){
	
	if(navigator.appName == "Netscape"){
	
		var show = document.getElementById("firefox_drop_down");
		show.style.visibility = "hidden";
		show.style.display = "none";
		
	}

}

function onClick(target){

	window.location = target + ".php";

}