[OpenLayers-Users] how to set layer visibility from javascript function

[her lambang]

Hello,
I'm lambang, i'm new in openLayers
I would ask about how to set layer visibility from javascript function that
using parameter

code :
               var stat=1;
               function showObject(layername){
                   if(stat==1){
                       layername.setVisibility(true);
                       stat=0;
                   }else if(stat==0){
                       layername.setVisibility(false);
                       stat=1;
                   }
               }

if i access this function inside $(document).ready(function(){.....}
this is return an error "layername.setVisibility is not a function"
Is there any solutions ??


Regards,

Lambang

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