$.ready(function(complete){

 var picts = ($.obj.getElementsByClass("mainPic"));
 for(var e=0;e<(picts.length);e++){
  $.events(picts[e], "mouseout", function(e){ $.obj.alpha($.returnElement(e), "80"); });
  $.events(picts[e], "mouseover", function(e){ $.obj.alpha($.returnElement(e), "100") });
  $.obj.alpha(picts[e], "80");
 }; // ## end of for-loop

}); // ## end of ready-state