js 强制弹出窗口代码研究－又一款代码

<script language="JavaScript"> 
var paypopupURL = "https://3water.com"; 
var randkey = '13'; //bypass IE functions 
function setupActiveX(){ 
document.write(' <INPUT ID="autoHit" TYPE="TEXT" ONKEYPRESS="showActiveX()">'); 
} 
function openActiveX(){ 
document.getElementById('autoHit').fireEvent("onkeypress",(document.createEventObject().keyCode=escape(randkey).substring(1))); 
} 
function showActiveX(){ 
var newWindow=window.open(paypopupURL,'abcdefg','width=200,height=200,top=50,left='+(screen.width-250)); 
} 
setupActiveX(); 
openActiveX(); 
self.focus(); 
</script>