[Disco_Stu]

Just enclose your block of code within a span or division and then toggle the display from NONE to BLOCK whenever you want to hide or display your code:

Here the span is hidden via the style attribute of "display:none"

<span id="myspan" style="display:none;">

and here it is displayed:

<span id="myspan" style="display:block;">

To change it I created two functions LoadElement and HideElement which accepts the name of a span or division as the parm.

function LoadElement(eid)
{
  var element = document.getElementById(eid);
  element.style.display = 'block';
}

function HideElement(eid)
{
  var element = document.getElementById(eid);
  element.style.display = 'none';
}

Then to display the span:

LoadElement('myspan');

and to hide the span:

HideElement('myspan');

That's how I do it. Of course you still need the code to test for a specific user , group or style that you want to show/hide the block for