There may be chages but this code from the old forum for 2.4.1 by Olivier worked for me
You can do it like this :
- Override the core K2 item form layout by copying the file'components/com_k2/views/item/tmpl/form.php' to 'templates/YOURJOOMLATEMPLATE/html/com_k2/item/form.php' - Edit this newfile and add this js code to it (in 2.4.1, i've added this in line 208, just before the end of the K2 js part) :
Is exactly what i did have on k2.4.1 and was working perfect. Then. Now, after i upgraded k2 to 2.5.5, the override is not overriding anymore.
Is Joomla 1.5.26 with k2 2.5.5 ( just upgraded from 2.4.1)