.left_a1 a{ 
  background-image:url("../recipecategory/egja01a.jpg");
  }
.right_a2 a{ 
  background-image:url("../recipecategory/egja02a.jpg");
  }
.left_a3 a{ 
  background-image:url("../recipecategory/egja03a.jpg");
  }
.left_b1 a{ 
  background-image:url("../recipecategory/egin02b.jpg");
  }
.right_b2 a{ 
  background-image:url("../recipecategory/egin01b.jpg");
  }
.left_b3 a{ 
  background-image:url("../recipecategory/egin05b.jpg");
  }