GUI will not disappear

I am trying to make a team selection but the GUI will not disappear when the team is selected. The player will spawn but the GUI remains. I am very new to scripting and trying to follow a tutorial any help would be great. Here is the Script.

 #pragma strict
 
 var Connection : boolean = false;
 
 var RedPlayer : GameObject;
 var BluePlayer : GameObject;
 
 var CurTeam : String = "";
 var Dead : boolean = true;
 
 var SpawnPointRed : GameObject;
 var SpawnPointBlue : GameObject;
 
 var CenterW : float;
 var CenterH : float;
  
 function Start ()
 {
     CurTeam = "";
     CenterW = Screen.width / 2 - 150;
     CenterH = Screen.height / 2 - 80;
 }
 
 function OnGUI () 
 {
 if(Network.peerType == NetworkPeerType.Disconnected)
 {
      Connection = false;
 }
 else 
 {
      Connection = true;
 }
 
 if(Connection == true)
 {
   
     if(CurTeam == "")
     {
         GUI.Box(Rect(CenterW, CenterH, 300, 160), "Select A Team");
         if(GUI.Button(Rect(CenterW + 5,CenterH + 20, 290, 65), "Red Team"))
         {
             Network.Instantiate(RedPlayer, SpawnPointRed.transform.position, transform.rotation, 0);
             CurTeam = "Red";
             Dead = false;
         }
         if(GUI.Button(Rect(CenterW + 5,CenterH + 90, 290, 65), "Blue Team"))
         {
             Network.Instantiate(BluePlayer, SpawnPointBlue.transform.position, transform.rotation, 0);
             CurTeam = "Blue";
             Dead = false;
         }
     }
     else
     {
     if(Dead == true)
     {
         GUI.Box(Rect(CenterW, CenterH, 300, 160), "You died");
         if(GUI.Button(Rect(CenterW + 5, CenterH + 20, 290, 130), "Respawn"))
         {
             if(CurTeam == "Red")
             {
                  Network.Instantiate(RedPlayer, SpawnPointRed.transform.position, transform.rotation, 0);
                  Dead = false;
             }
             if(CurTeam == "Blue")
             {
                  Network.Instantiate(BluePlayer, SpawnPointBlue.transform.position, transform.rotation, 0);
                  Dead = false;
             }
         }
     }
     }    
 }
 }