.head		{ height:177px; background:#b6c9fd url(../img/head_blue2_bg.gif) repeat-x; }
.head .pic	{ display:block; height:177px; background:url(../img/head_blue2_pic.jpg) no-repeat top left; }
.head s.l	{ display:block; float:left;  width:15px; height:177px; background:url(../img/head_blue2_ld.gif) no-repeat bottom left; }
.head s.r	{ display:block; float:right; width:20px; height:177px; background:url(../img/head_blue2_rd.gif) no-repeat bottom right; }