var picturebar = {

    init: function(){
        if ( $("pictures") )
            picturebar.scale($('pictures'));
        
        $$(".pictures").each( function(pic){
            picturebar.scale(pic);
        })
     },
   
    scale : function(pic){
        new Effect.Scale(pic, 44900, { scaleY: false, scaleContent:false, duration: 4});
    }
}
Event.observe(window, "load", picturebar.init);