When Microsoft releases a major new version of the browser that still boasts 85 percent market share, Web managers around the world take note. Internet Explorer 7 (IE7) is more standards-compliant than its predecessor, but like all browsers, it has its foibles. Perhaps more importantly, it's not IE6, a finicky browser for which software developers built special work-arounds that may now break or need revision under the new version.
Will IE7 affect your software? Here are some known content management systems (CMS) and portal problems:
Active X: Many commercial CMS packages still use ActiveX controls as rich-text editors or as the entire interface; these need to be updated. Among other things, Microsoft's new security emphasis mandates an "opt-in" approach in which ActiveX controls need to be reregistered and perhaps reinstalled under new security settings. Vendors have had to modify some features of the controls.
Cascading Style Sheets: This is the big one. IE7 fixes most (though not all) of the bugs in CSS standards support. This is a good thing but creates problems when apps lack upgrades for work-arounds developed for IE6, particularly when browser sniffers look for "IE6 or greater" and serve a mangled page. Many portal and CMS interfaces are CSS-driven, so this could become a major support challenge.