function showPlagin(idno){  
    pc = ('PlagClose' + (idno));  
    po = ('PlagOpen' + (idno));  
    if( document.getElementById(pc).style.display == "none" ) {  
      document.getElementById(pc).style.display = "block";  
      document.getElementById(po).style.display = "none";  
    }  
    else {  
      document.getElementById(pc).style.display = "none";  
      document.getElementById(po).style.display = "block";  
    }
  }