if(itemStack != null && itemStack.getItem() instanceof ItemPortableTeleporter)
{
return new GuiPortableTeleporter(player, itemStack);
}
case 15:
return new GuiPurificationChamber(player.inventory, (TileEntityAdvancedElectricMachine)tileEntity);
case 16:
return new GuiEnergizedSmelter(player.inventory, (TileEntityElectricMachine)tileEntity);
case 17:
return new GuiElectricPump(player.inventory, (TileEntityElectricPump)tileEntity);
case 18: