function colapseTable(tablename){

  var tableStyle = document.getElementById(tablename).style;
  var headerStyle = document.getElementById(tablename+"_header").style;
   if (tableStyle.visibility!="hidden"){  
    	tableStyle.visibility="hidden";  
    	tableStyle.display="none";  	
  	headerStyle.visibility="visible";  	  	
  	headerStyle.display="block";  	  	
    	
    }

}

function displayTable(tablename){

  var headerStyle = document.getElementById(tablename+"_header").style;

  var tableStyle = document.getElementById(tablename).style;
  
   if (tableStyle.visibility!="visible"){  
    	tableStyle.visibility="visible";  
    	tableStyle.display="block";  	
  	headerStyle.visibility="hidden";  	  	
  	headerStyle.display="none";  	  	
    	
    	
    }

}