// show/hide
function s(id) 
{ 
  var d = eval("document.getElementById('" + id + "_desc')");
  //var e = eval("document.getElementById('" + id + "_title')");
	var f = eval("document.getElementById('" + id + "_container')");
	
	d.className = (d.className == "hide") ? "course_desc" : "hide";
	//e.className = (e.className == "course_title") ? "course_title_on" : "course_title";
	f.className = (f.className == "hide") ? "course_container" : "hide";
}

function s_c(id)
{ 
  var d = eval("document.getElementById('course_" + id + "')");
	d.className = (d.className == "hide") ? "course_summary" : "hide";
}