html, body {

  height: 100%;

  width: 100%;

}

html {

  display:table;

} 

body {

      text-align: center;

      vertical-align: middle;

      display: table-cell;

}

#main {

      margin: 0 auto;

        border: 0px; 

      width: 200px;

      height: 40px;

      background: #000;
	  
	  color:#FFF;
      
	  text-align: center;

      vertical-align: middle;
}

* html #main {

  position: absolute;

  top: expression((x=(document.documentElement.offsetHeight-this.offsetHeight)/2)<0?0:x+'px');

  left: 50%;

  margin-left: -400px;

}