浏览器事件监听兼容 attachEvent

if (window.attachEvent) { 
    window.attachEvent("onload", remove); 
} else if (window.addEventListener) { 
    window.addEventListener("load", remove, false);   
}             
function remove() { 
    var div = document.getElementByIdx_x("divprogressbar"); 
    document.body.removeChild(div); 
}