document.observe("dom:loaded", function() {
											
		if ($('find_a_counsellor_form'))
		{
			$('find_a_counsellor_form').select('input.select_all').each(function(element){
				element.onchange = function()
				{
					var value = this.checked;
					
					this.up('fieldset').select('input').each(function(checkbox){
						checkbox.checked = value;						  
					});
				}
			});
		}
		
	});