Show/hide Multiple Elements With One Link Using Javascript

How can i do this i already have a function to show/hide elements with one link but how can i show/hide multiple elements

Here is the script:

function obj_ref(object)
{
if (document.getElementById)
{
return document.getElementById(object);
}
else if (document.all)
{
return eval('document.all.' + object);
}
else
{
return false;
}
}

function obj_toggle(object, open_close, open_text, close_text)
{
var object = obj_ref(object);
var icone = obj_ref(open_close);

if( !object.style )
{
return false;
}

if( object.style.display == 'none' )
{
object.style.display = ''
icone.innerHTML = close_text;
}
else
{
object.style.display = 'none'
icone.innerHTML = open_text;
}
}