body{
margin:20px;
padding:0;
background-color:#ffffff;
background-image:url(../img/bg.jpg);
background-repeat:repeat-x;
background-attachment:fixed;
overflow:auto;
}
#enter{
position:absolute;
top:50%;
left:50%;
margin-top:-270px;
margin-left:-150px;
width:300px;
}
.effect{
top:50%;
left:50%;
position:absolute;
margin-left:-150px;
margin-top:-200px;
}
#bgm{
text-indent:-1000px;
}
a{text-decoration:none;}
a:link{color:#cc0000;}
a:visited{color:#cc0000;}
a:hover{color:#cc8800;}
a:active{color:#cc0000;}






img {border:none;margin:2px 0;}

a:hover{cursor: pointer;}
a:hover img{filter:Alpha(Opacity=50);  -moz-opacity:0.5; opacity:0.5; -khtml-opacity:0.5;}