#main{ width:750px; float:right; position:relative;}
#main_content{ width:700px; float:left;}
.back{ margin:0 20px 0 570px; height:20px; position:absolute; top:20px; width:130px;}
#title {width:700px; height:30px; background:url(../images/now_art/title_1.gif) no-repeat left top; }
#title2{width:700px; height:30px; background-image: url(../images/now_art/title_2.gif); background-position:top left; background-repeat:no-repeat;}
#title3 {width:700px; height:40px; background-image: url(../images/now_art/title_3.gif); background-position:top left; background-repeat:no-repeat;}