Open in link in lightbox/colorbox from webgl

Hi,

We manage to open a link in a new tab from unity through the use of jslib:

 var OpenWindowPlugin = {
     openWindow: function(link)
     {
         var url = Pointer_stringify(link);
         document.onmouseup = function()
         {
             window.open(url);
             document.onmouseup = null;
         }
     }
 };
 mergeInto(LibraryManager.library, OpenWindowPlugin);

We need to open viimeo movies in a lighbox/colorbox though, instead of a new tab.

Any suggestions? we put the following instead of window.open :

 $.colorbox({iframe: true, href: elementURL, innerWidth: 645, innerHeight: 509});

But we get an error in the browser saying reference $ is not defined.

Any helping hands on this, seamingly, easy challenge?

thnx

sven