// JavaScript Document

 var blocks = new Array();

 function showBlock(block_id) {

   if (document.getElementById(block_id).style.visibility == "hidden") {
     document.getElementById(block_id).style.visibility = "visible";
     document.getElementById(block_id).style.display = "inline";
   }
   else
   {
     document.getElementById(block_id).style.visibility = "hidden";
     document.getElementById(block_id).style.display = "none";
   }

 }