body{
	font-size: 12px;
	background-attachment:fixed;
	background-image : url("image/back.gif");
	background-repeat:repeat-x;
	background-position:0% 0%;
}
.font_nomal {  font-size: 12px}
.font_small {  font-size: 10px}
.font_large {  font-size: 14px}
/* CSS Document */