.cotitle{ width:933x; height:319px; }
.letitlelb{ width:933px; float:left; height:319px; background-image:url(../images/001.jpg); background-repeat:no-repeat;}
.letitlelc{ width:933px; float:left; height:319px; background-image:url(../images/002.jpg); background-repeat:no-repeat;}
.letitleld {width:933px; float:left; height:319px; background-image:url(../images/003.jpg); background-repeat:no-repeat;}