// tabnav function for homepage box
function show_content(id) 
{	

	if (id == "a") 
	{
	  document.getElementById("a").setAttribute("src","/cgi-bin/images/whats_new_active.gif");
	  document.getElementById("contenta").style.display = "block";
	  
	 	document.getElementById("b").setAttribute("src","/cgi-bin/images/events_workshops_inactive.gif");
	  document.getElementById("contentb").style.display = "none";
	  
	 	document.getElementById("c").setAttribute("src","/cgi-bin/images/faculty_staff_inactive.gif");
	  document.getElementById("contentc").style.display = "none";
	  
	 	document.getElementById("d").setAttribute("src","/cgi-bin/images/for_retirees_inactive.gif");
	  document.getElementById("contentd").style.display = "none";
  }
	
	else if (id == "b")
	{
	 	document.getElementById("a").setAttribute("src","/cgi-bin/images/whats_new_inactive.gif");
	  document.getElementById("contenta").style.display = "none";
	  
	  document.getElementById("b").setAttribute("src","/cgi-bin/images/events_workshops_active.gif");
	  document.getElementById("contentb").style.display = "block";
	  
	 	document.getElementById("c").setAttribute("src","/cgi-bin/images/faculty_staff_inactive.gif");
	  document.getElementById("contentc").style.display = "none";
	  
	 	document.getElementById("d").setAttribute("src","/cgi-bin/images/for_retirees_inactive.gif");
	  document.getElementById("contentd").style.display = "none";
  }
	
	else if (id == "c")
	{
	 	document.getElementById("a").setAttribute("src","/cgi-bin/images/whats_new_inactive.gif");
	  document.getElementById("contenta").style.display = "none";
	  
	 	document.getElementById("b").setAttribute("src","/cgi-bin/images/events_workshops_inactive.gif");
	  document.getElementById("contentb").style.display = "none";
	  
	  document.getElementById("c").setAttribute("src","/cgi-bin/images/faculty_staff_active.gif");
	  document.getElementById("contentc").style.display = "block";
	  
	 	document.getElementById("d").setAttribute("src","/cgi-bin/images/for_retirees_inactive.gif");
	  document.getElementById("contentd").style.display = "none";
  }
	
	else if (id == "d")
	{	  
	 	document.getElementById("a").setAttribute("src","/cgi-bin/images/whats_new_inactive.gif");
	  document.getElementById("contenta").style.display = "none";
	  
	 	document.getElementById("b").setAttribute("src","/cgi-bin/images/events_workshops_inactive.gif");
	  document.getElementById("contentb").style.display = "none";
	  
	 	document.getElementById("c").setAttribute("src","/cgi-bin/images/faculty_staff_inactive.gif");
	  document.getElementById("contentc").style.display = "none";
	  
	  document.getElementById("d").setAttribute("src","/cgi-bin/images/for_retirees_active.gif");
	  document.getElementById("contentd").style.display = "block";
  }
  
}