JavaScript controls hiding and showing content

Contain the following similar code in the Jsp page:

                                               "

       onclick="$_$('#selectUser').css ({display:' '});">Display

      

onclick="$_$('#selectUser').css ({display:' '}):">Hide

The following code is to control the displayed content

. . . . . . . . . . .

or

        . . . . . . . . . . .

Of course, the control code can also be written in function() according to the specific situation