var prev_s = '';

function openSub(s) {
  if (prev_s != '') {
    document.getElementById(prev_s).style.display = 'none';
  }
  document.getElementById(s).style.display = 'block';
  prev_s = s;
}

function loadproject(name_project,el) {
	document.getElementById('ai_project').src="/content/common/gfx/"+name_project+"/"+el+".jpg";
}

var FadeIn = function(item,name_project,el){
	var div = $(item).setStyles({
		display:'block',
		opacity: 0
	});
	new Fx.Style(div, 'opacity', {duration: 1000} ).start(1);
};
 
 var FadeOut = function(item,name_project,el){
	var div = $(item).setStyles({
		display:'block',
		opacity: 1
	});
	new Fx.Style(div, 'opacity', {duration: 1000} ).start(0);
};