General JS-Problems with templates and jQuery¶

jQuery is often used by templaters and other extensions. jQuery must not loaded more than one time. To prevent incompatibilities, you can easily switch off the loading of the virtuemart jQuery library.

Look for this at /administrator/index.php?option=com_virtuemart&view=config tab templates.

uThe options for you important are:
Using the Virtuemart jQuery
Using the product Scripts
Using the Script ajax Countries / Regions

Most jquery conflicts are fixed, when you disable the "Virtuemart jQuery" library.