$(function() {
    // this var will be used to tell the system whether or not 
    // other sections will respond to clicking on a headline 
    var closeOthers = true; 
    
    // check which sections are open 
    function checkOpen() { 
      // how many sections are open 
      var openCount = $('#accordion .acc1:visible').length; 
      // how many sections are there 
      var totalCount = $('#accordion acc1').length; 
      // set closeOthers var based on if there are 1 or 0 sections open 
      if (openCount < 2) closeOthers = true; 
      // change the text in the expand link based on if 
      // there are more or less than half of the sections open 
//	  alert(openCount);
      if (openCount > totalCount/2) { 
	$('#expand').html("Collapse All"); 
      } 
      else { 
	$('#expand').html("Expand All"); 
      } 
    } 
    // hide all sections 
    $('#accordion acc1').hide(); 
    // show the first section 
    $('#accordion acc1:first').show(); 
    // actions taken upon clicking any headline 
    $('#accordion h3').click( function() { 
				       // set checkSection to the section next to the headline clicked 
				       var checkSection = $(this).next(); 
				       // if the section is open, close it, and call checkOpen 
				       if(checkSection.is(':visible')) { 
					 checkSection.slideUp('normal', checkOpen); 
					 return false; 
				       } 
				       // if the section is closed and closeOthers 
				       // is true, close all other open sections 
				       else { 
					 if (closeOthers) { 
					   $('#accordion div.acc1:visible').slideUp('normal'); 
					 } 
					 // open the section and call checkOpen 
					 checkSection.slideDown('normal', checkOpen); 
					 return false; 
				 } 
				     }); 
    // actions taken upon clicking the expand link 
    $('#expand').click( function() { 
				     // if the expand link's text is 'expand all', set closeOthers 
				     // to false, open all sections and call checkOpen 
				     if ($('#expand').text() == "Expand All") { 
				       closeOthers = false; 
				       $('#accordion div.acc1').slideDown('normal', checkOpen); 
				     } 
				     // else if the expand link's text is 'collapse all', set closeOthers 
				     // to true, hide all sections, and call checkOpen 
				     else { 
				       closeOthers = true; 
				       // the 1 prevents nasty flickering in some browsers 
				       $('#accordion div.acc1').hide(1, checkOpen); 
				     } 
				     return false; 
				   }); 
});