在RFT中如何等待浏览器处于Ready状态？

在RFT中，如何等待一段时间，让浏览器启动并加载页面处于Ready状态？下面的代码可以实现：

        closeIEBrowsers();
        startBrowser("http://blog.csdn.net/testing_is_believing");
        if(waitForReady())
            System.out.println("Ready!");
        else
            System.out.println("NOT Ready!");
 
关闭所有IE浏览器的方法closeIEBrowsers，参见：
http://blog.csdn.net/Testing_is_believing/archive/2010/01/22/5233918.aspx
 
waitForReady方法如下所示：
    public static boolean waitForReady() {      
        long maxWaitTimeMillis = 60000;
       
        //get start time so can determine timeout
        long startTime = System.currentTimeMillis();
       
        TestObject to = findBrowser();
       
        while ((to ==null) && ((System.currentTimeMillis() - startTime) < maxWaitTimeMillis))
        {
            sleep(10);
            to = findBrowser();
        }
        if (to == null)
            return false;
           
    //get start time again for next timeout
        startTime = System.currentTimeMillis();
   
        while (!isReady(to) && (System.currentTimeMillis() - startTime) < maxWaitTimeMillis)
            sleep(2);
       
        if (isReady(to)) {
            RationalTestScript.unregister(new Object[]{to});           
            return true;
        }
        else {
            RationalTestScript.unregister(new Object[]{to});
            return false;
        }
    }
   
 
通过获取测试对象的readyState属性值来判断页面是否加载完成：
    public static boolean isReady(TestObject to) {
        return Integer.parseInt(to.getProperty(".readyState").toString()) == 4;       
    }
   
 
查找浏览器实例的方法：
    public static BrowserTestObject findBrowser() {
        DomainTestObject domains[] = getDomains();
 
        for (int i = 0; i < domains.length; ++i) {
            try {
                if (domains[i].getName().equals("Html")) {
                    //We found an Html domain.
                    TestObject[] topObjects = domains[i].getTopObjects();
                    if (topObjects != null) {
                        try {
                            for (int j = 0; j < topObjects.length; ++j) {
                           
                                if (topObjects[j] instanceof BrowserTestObject)
                                {
                                    return (BrowserTestObject)topObjects[j];
                                }
                            }
                        } catch (Exception e) {
                            System.out.println("Exception in findBrowser: " + e);
                            e.printStackTrace();
                        }
                    }
                }
            } catch (com.rational.test.ft.TargetGoneException e) {
                //noop - continue if target has since disappeared
            }
        }
        //if we get here, we didn't find a browser
        return null;
    }