#sansui #index_back{
	height:400px;
	background-image: url(../common/topback2.jpg);
	background-repeat: no-repeat;
	background-position: left bottom;	
}

#topcontents{
	float:right;
	width:620px;
	height:380px;
	background-image:url(../common/topback.jpg);
	background-position:right bottom;
	background-repeat:no-repeat;
}