function sh(theTable)
  {    
  i=1;    
  var linkname = ''; while(i<=7)
   {
   if(theTable!="s"+i)
   {
    linkname="s"+i;
	if(document.getElementById(linkname)!=null)
	    document.getElementById(linkname).style.display = 'none';
   } 
  
   i++;
   }     
   if (document.getElementById(theTable).style.display == 'none')
   {
   
     document.getElementById(theTable).style.display = 'block';
   }
   else
   {
    document.getElementById(theTable).style.display = 'block';
   }
  }