一个网页特效的问题

<!---->
<style type="text/css"><!--
.input {font-family: "Verdana", "Arial";font-size: 9px;color: #FFFFFF;cursor: hand;filter: Alpha(Opacity=100, FinishOpacity=0, Style=3, StartX=70, StartY=70, FinishX=100, FinishY=100);font-weight: bolder;width: 70px;height:16px;border: 0px;}
--></style>
<script><!--
function xrBt(value){
document.write("<input type=\"button\" value=\""+value+"\" class=\"input\" style=\"background-color: #00CCFF;\" onmouseover=\"this.style.filter='';this.style.color='#000000';this.style.background='#EEFFFF';\" onmouseout=\"this.style.filter='Alpha(Opacity=100,FinishOpacity=0,Style=3,StartX=70,StartY=70,FinishX=100,FinishY=100)';this.style.color='#FFFFFF';this.style.background='#00CCFF';\"/>");}