Javascript issues with IE 7 and IE8

For the past 2 years we have been using CRM 3 web URL with IE 6 and & and have done the javascripts according to these browsers. But not we get javascript errors. This is due to the fact that the customer have upgraded IE 7 to IE 8. Accessing labels are bit different in IE8. I will post some issues that we have faced in a nother post.