Error using internet explorer 7

I’m having just installed Internet Explorer 7, I have the OS Windows Vista. With the new version of IE, I had many problem for example In Internet Explorer's default setting, a small warning icon appears in the status bar like the one pictured left.
Double – click this icon to display a window with the complete error message.
The complete error message looks something like this:

Problems with this Web page might prevent it from being displayed properly or functioning properly. In the future, you can display this message by double – clicking the warning icon displayed in the status bar.
OK Hide Details
Line: 71
Char: 1
Error: Object expected
Code: 0
