#js_navi li{ }
#js_navi li a{}
#js_navi li a:link    {}
#js_navi li a:visited {}
#js_navi li a:hover   {opacity:0.8;}
#js_navi li a:active  {opacity:0.8;}
/* IE用 ↓*/
#js_navi li a:hover img {filter:alpha(opacity=80);}

.architecture_img_b{ height: 500px; 
}
.architecture_img_b img{
}
.architecture_img_b2{ height: 500px; 
}
.architecture_img_b2 img{
}
.architecture_img_b3{ height: 500px; 
}
.architecture_img_b3 img{
}
.architecture_img_b4{ height: 500px; 
}
.architecture_img_b4 img{
}
.architecture_img_b5{ height: 500px; 
}
.architecture_img_b5 img{
}