var _PageHeight = document.documentElement.clientHeight,
_PageWidth = document.documentElement.clientWidth;
var _LoadingTop = _PageHeight > 61 ? (_PageHeight - 61) / 3: 0,
_LoadingLeft = _PageWidth > 215 ? (_PageWidth - 215) / 2: 0;
var _LoadingHtml = '<div id="loadingDiv" style="position:absolute;left:0;width:100%;height:' + _PageHeight + 'px;top:0;background:#f3f8ff;opacity:0.8;filter:alpha(opacity=80);z-index:10000;"><div style="position: absolute; cursor1: wait; left: ' + _LoadingLeft + "px; top:" + _LoadingTop + "px; width: auto; height: 57px; line-height: 57px; padding-left: 40px; padding-right: 20px; background: #fff url(../images/loading.gif) no-repeat scroll 15px 20px; border: 2px solid #95B8E7; color: #333;font-size:14px; font-family:'Microsoft YaHei';\">页面加载中，请等待...</div></div>";
document.write(_LoadingHtml);
document.onreadystatechange = completeLoading;
function completeLoading() {
    if (document.readyState == "complete") {
        var loadingMask = document.getElementById("loadingDiv");
        loadingMask.parentNode.removeChild(loadingMask)
    }
};