$(document).ready( 
  function() {
    // Find the input tag of ID advance_search 
    // on the click event 
    $('#button_text').click(
      function() {
        // toggle of div id  advance search
        $('#advance_search_options').toggle("slow");
        var toggle_text = $("#toggle_text").html();
        document.getElementById('last_name').value = '';
        document.getElementById('first_name').value = '';        
        if (toggle_text == 'Advanced Search') {
          $("#toggle_text").html("Simple Search");
        } else if (toggle_text == 'Simple Search'){
          $("#toggle_text").html("Advanced Search");
        }
      }
    );
    $('.module > h1').click(
      function() {
      $('../div', this).toggle('slow');
      }
    );
		$('#first_name').keypress(
			function (e) {	
        if (e.keyCode == 13)//13 is for return key
				document.forms['myform_search'].submit();
			}
		);
	 $('#last_name').keypress(
			function (e) {	
        if (e.keyCode == 13)//13 is for return key
				document.forms['myform_search'].submit();
			}
		);
  } 
);