Got the mouse wheel working fine in the end, just have to work out if I can find something to install that lets me control buttons 6 and 7 on the intellimoose... Fiddling with the calendar object I wrote some, it’s based on the Jscript one on here, but entirely client side JavaScript. It’s also about 4 times smaller than the huge old bloaty thing we had on the site. Just need to make it an object that gets all its info from the forms...