Microsoft Internet Explorer 7?

I have Microsoft Internet Explorer 7. when i open it, it will open in a different size that when i closed it. i use it as a maximized window and then when it open it opens in half window. why is it ?

Microsoft Internet Explorer 7?nortonantivirus

When it opens in the small screen, at the bottom right hand corner you will notice little dots in the shape of an arrow, put your pointer on that till a little arrow goes in both directions then drag it to the size you want, on the side and top,do the same but not in the corner, it should always start like that in future.