If you are using Lightbox 2 with Impromptu jquery plugin on the same page, your jquery code may fail whenever lightbox is activated. My initial problem was I got the following error when Impromptu code was executed:
$.prompt is not a function
A fix for this is pretty straight forward, you simply place jQuery.noConflict() before the $.prompt line.
Example would be from this code:
$.prompt(txt,{
buttons:{Delete:true, Cancel:false},
callback: function(v,m,f){
...etc.
To something like this:
var $j = jQuery.noConflict();
$j.prompt(txt,{
buttons:{Delete:true, Cancel:false},
callback: function(v,m,f){
//...etc.
Hope this helps someone with the same problem.