Css tutorial: ie6 fixed solution

For Internet Explorer 7 (www.bkjia.com), firefox supports postion: fixed (with Page scrolling), but does not work for Internet Explorer 6. In fact, the solution is relatively simple, define an expression in css. For example, to fixed the element whose id is left_menu, you can do this:

Copy to ClipboardReference: [www.bkjia.com]. left_menu {
Position: fixed;/* Firefox */
_ Position: absolute;/* ie6 */
* Position: absolute;/* ie7, which can already be fixed, but adding top also applies to ie7, so it can only be defined as ie6 */
Top: expression(eval(document.doc umentElement. scrollTop ));}