function change(id){
 var current =document.getElementById(id);
 var current1=document.getElementById('Video');
 var current2=document.getElementById('forum');
 var current3=document.getElementById('group');
 var current4=document.getElementById('game');
 var current5=document.getElementById('music');
  if(id=="Video")
  
    { 
      current.style.display ="";
	  current2.style.display ="none";
	  current3.style.display ="none";
	  current4.style.display ="none";
	  current5.style.display ="none"; 
    }
	if(id=="forum")
  
    { 
      current2.style.display ="";
	  current1.style.display ="none";
	  current3.style.display ="none";
	  current4.style.display ="none";
	  current5.style.display ="none";
    }
	if(id=="group")
    { 
      current3.style.display ="";
	  current2.style.display ="none";
	  current1.style.display ="none";
	  current4.style.display ="none";
	  current5.style.display ="none";
    }
		if(id=="game")
    { 
      current4.style.display ="";
	  current3.style.display ="none";
	  current2.style.display ="none";
	  current1.style.display ="none";
	  current5.style.display ="none";
    }
		if(id=="music")
    { 
      current5.style.display ="";
	  current4.style.display ="none";
	  current3.style.display ="none";
	  current2.style.display ="none";
	  current1.style.display ="none";
    }	
}

function changecss(id){
 var current_0 =document.getElementById(id);
 var current_1=document.getElementById('ship');
 var current_2=document.getElementById('lunt');
 var current_3=document.getElementById('quanz');
 var current_4=document.getElementById('youx');
 var current_5=document.getElementById('yiny');
  if(id=="ship")
  
    { 
      current_0.className ="di_bai";
	  current_2.className ="di_hui";
	  current_3.className ="di_hui";
	  current_4.className ="di_hui";
	  current_5.className ="di_hui"; 
    }
	if(id=="lunt")
  
    { 
      current_2.className ="di_bai";
	  current_1.className ="di_hui";
	  current_3.className ="di_hui";
	  current_4.className ="di_hui";
	  current_5.className ="di_hui";
    }
	if(id=="quanz")
    { 
      current_3.className ="di_bai";
	  current_2.className ="di_hui";
	  current_1.className ="di_hui";
	  current_4.className ="di_hui";
	  current_5.className ="di_hui";
    }
		if(id=="youx")
    { 
      current_4.className ="di_bai";
	  current_3.className ="di_hui";
	  current_2.className ="di_hui";
	  current_1.className ="di_hui";
	  current_5.className ="di_hui";
    }
		if(id=="yiny")
    { 
      current_5.className ="di_bai";
	  current_4.className ="di_hui";
	  current_3.className ="di_hui";
	  current_2.className ="di_hui";
	  current_1.className ="di_hui";
    }	
}