/****样式重置*****/
body,dd,dl,dt,form,h1,h2,h3,h4,h5,h6,p{margin:0}
input,li,ol,textarea,ul{margin:0;padding:0}
li,ol,ul{list-style:none}
a{cursor:pointer;text-decoration:none;outline:0;text-decoration: underline;}
a:hover{text-decoration:none}
img{border:0;display:inline-block}
button,input,option,select,textarea{font-family:inherit;font-size:inherit;font-style:inherit;font-weight:inherit;outline:0;border:0 none}
button,input,select,textarea{margin:0;font-size:100%;vertical-align:middle}
*html{background-image:url(about:blank);background-attachment:fixed}

html,body{
	width:100%;
}
.tab_1{
	width:100%;
}
.tab_1 td{
	width:25%;
	overflow: hidden;
}
.tab_1 td a{
	
}
.tab_1 td a img{
	width:100%;
}
.tab_2 td img{
	vertical-align: middle;
}
.tab_2 td a{
	vertical-align: middle;
}