Hello I am using the jQuery plugin fancybox to display bing maps when somebody enters an address into a textbox and hits the submit button beside it. And a fancybox is loade
I already had this type of errors because i was reloading jQuery after the plugin import, check you don't reimport jquery by mistake (sometimes included in a package like jQuery tools).
You need to load the extensions like easing.js and mousewheel.js BEFORE the main fancybox plugin. That solves the problem.