Select drop-down menu cannot be used for connecting to a in Firefox. select drop-down menu

Select drop-down menu cannot be used for connecting to a in Firefox. select drop-down menu

The select drop-down menu cannot be used for connecting to a in Firefox:
If the select drop-down menu is enclosed in link a, the selected effect cannot be achieved. Of course, such use is rare in practical applications, but the following is a brief introduction, how to avoid this problem, hope to bring some help to the publisher.
The code example is as follows:

<! DOCTYPE html>  
The above code appears in the drop-down menu when you click the Firefox browser for the first time, but the second click cannot be successful. There is no good way yet, as long as you modify the link a to the span element.
 
The original address is: http://www.softwhy.com/forum.php? Mod = viewthread & tid = 13586.
 
For more information, see: http://www.softwhy.com/divcss/