var div_publications_01 = $('publications_01').setStyles({display:'block',opacity: 1});
var div_publications_02 = $('publications_02').setStyles({ display:'none',opacity: 0});
var div_publications_03 = $('publications_03').setStyles({ display:'none',opacity: 0});

var publications_01 = function(){
	div_publications_01.setStyles({ display:'block',opacity: 0});
	new Fx.Style(div_publications_01, 'opacity', {duration: 1000} ).start(1);
	
	contents_navi_a.setStyles({ textDecoration: 'none'});
	
	document.getElementsByClassName("contents_navi_a")[0].style.textDecoration = "underline";
	
	div_publications_02.setStyles({ display:'none',opacity: 0});
	div_publications_03.setStyles({ display:'none',opacity: 0});
};

var publications_02 = function(){
	div_publications_02.setStyles({ display:'block',opacity: 0});
	new Fx.Style(div_publications_02, 'opacity', {duration: 1000} ).start(1);
	
	contents_navi_a.setStyles({ textDecoration: 'none'});
	
	document.getElementsByClassName("contents_navi_a")[1].style.textDecoration = "underline";
	
	div_publications_01.setStyles({ display:'none',opacity: 0});
	div_publications_03.setStyles({ display:'none',opacity: 0});
};

var publications_03 = function(){
	div_publications_03.setStyles({ display:'block',opacity: 0});
	new Fx.Style(div_publications_03, 'opacity', {duration: 1000} ).start(1);
	
	contents_navi_a.setStyles({ textDecoration: 'none'});
	
	document.getElementsByClassName("contents_navi_a")[2].style.textDecoration = "underline";
	
	div_publications_01.setStyles({ display:'none',opacity: 0});
	div_publications_02.setStyles({ display:'none',opacity: 0});
};