.bg_02 {  background:    url(../img/rd/blue2.gif) no-repeat fixed left top}
.bg_03 { background:   url(../img/rd/blue3.gif) no-repeat fixed left top}
.bg_04 { background:   url(../img/rd/blue4.gif) no-repeat fixed left top}
.bg_05 { background:   url(../img/rd/blue5.gif) no-repeat fixed left top}
.bg_06 { background:   url(../img/rd/blue6.gif) no-repeat fixed left top}