$(document).ready(function(){

$("#ro1").mouseenter(function(){
var ro1=$(".con3_banner1");
ro1.animate({opacity:'0.1'},"fast");
ro1.animate({opacity:'1'},"fast");
});

$("#ro2").mouseenter(function(){
var ro2=$(".con3_banner2");
ro2.animate({opacity:'0.1'},"fast");
ro2.animate({opacity:'1'},"fast");
});

$("#ro3").mouseenter(function(){
var ro3=$(".con3_banner3");
ro3.animate({opacity:'0.1'},"fast");
ro3.animate({opacity:'1'},"fast");
});


});