## mark a section (Learn more)

#JS $$("td.filterfeedlink > a").each(function(element){ // Find filter feed links Event.observe(element, "click", function(event){ // Register them to listen $$("td.filterfeedlink").each(function(el){ if(el != this){ el.up().removeClassName("turnwhite"); } }); this.up().up().addClassName("turnwhite"); // Clicked element -> white }); }); #HTML <table> <tr class='filterfeed'> <td> Info A </td> <td class='filterfeedlink' > <a href="#" onclick="new Ajax.Request...">Filter</a> </td> </tr> <tr class='filterfeed'> <td> Info B </td> <td class='filterfeedlink' > <a href="#" onclick="new Ajax.Request...">Filter</a> </td> </tr> <tr class='filterfeed'> <td> Info C </td> <td class='filterfeedlink' > <a href="#" onclick="new Ajax.Request...">Filter</a> </td> </tr> </table>

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