document.observe("dom:loaded", function(){

    // listener
    function fareDetailClick(e){
        var rule = e.target.className.substr(11);
        $('fareDetail').update($('fare_' + rule).innerHTML);
        $('fareDetail').show();
    }

    if ($('fareDetail')) {
	    var elements = $$("a").reject(function(el){ return el.className.indexOf("faredetail_") != 0 });
	
	    elements.each(function(el){
	        el.observe("click", fareDetailClick);
	    });
    };

});