Here is an basic example on how to create a jQeury toggle using the slideDown and SlideUp functions.
I prefer to use this instead of the toggle function for a smoother animation.

View the example

jQuery code used:
$(document).ready(function() {
$('#toggle_control').bind('click', function() {
if ( $('#copy_toggle').is(':hidden') ) {
$("#copy_toggle").slideDown('medium', function() {
});
}
else{
$("#copy_toggle").slideUp('medium', function() {
// Animation complete.
});
}
return false;
});
});