Welcome to Microsoft Windows Vista Forums. Check if the same happens in the no add-ons mode.
A)Start Internet Explorer in No Add-ons mode.
i)Click the Start button, click All Programs, click Accessories, click System Tools, and then click Internet Explorer (No Add-ons).
ii)Then Check if the website it’s still having the issue.
If it’s not having the issue, then the problem is caused by one of the add-ons used by the internet explorer.
Then you may have to disable /enable one by one and see which add-ons are causing the issue.
Before you disable a browser add-on, keep in mind that some WebPages, or Internet Explorer itself, might not
display properly if an add-on is disabled. We recommend that you only disable an add-on if it repeatedly causes Internet Explorer to close.
To permanently disable/enable add-ons in Internet Explorer 8
1.Open Internet Explorer by clicking the Start button, and then clicking Internet Explorer.
2.Click the Tools button, and then click Manage Add-ons.
3.Under Show, click All add-ons.
4.Click the add-on you want to disable, and then click Disable/Enable.
5.Repeat step 4 for every add-on you want to disable/enable. When you are finished, click Close.