This answer solved my problem. I just needed to click a link that is inside iframe so that after clicking that link the parent page in which the iframe is actually running could change in the browser.
We can easily achieve the facing goal by set target="_parent" to the Links which inside the iframe.
Just like the following demo shows:
<!--ParentPage.htm-->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
</head>
<body>
Parent Page
<iframe src="FramePage.htm"></iframe>
</body>
</html>
<!--FramePage.htm-->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
</head>
<body>
<a href="http://www.g.cn" target="_parent">hello</a>
</body>
</html>