/* This script and many more are available free online at
The JavaScript Source!! http://javascript.internet.com
Created by: Sandeep Gangadharan | http://www.sivamdesign.com/scripts/ */ 
if (document.getElementById) {	document.write('<style type="text/css">.texter {display:none;}</style>') } 

  var divNum = new Array("a1","a2","a3","a4","a5","a6","a7","a8","a9","a10","a11","a12","a13","a14","15","a16","a17","a18","a19","a20");// at the left you should add a1, a2 etc. for each header you wish to include
                                          // so if you want 4 headers you should add a1, a2, a3, a4 in the format shown
    // enclosed in double quotes
	  	  
function openClose(theID) {
  for(var i=0; i < divNum.length; i++) {
    if (divNum[i] == theID) {
     		if (document.getElementById(divNum[i]).style.display == "block") { document.getElementById(divNum[i]).style.display = "none" }
      else {
        document.getElementById(divNum[i]).style.display = "block"
      }
  } else {
    document.getElementById(divNum[i]).style.display = "none"; }
  }
}