This is a great product! It does what it says on the tin. Initially had an issue with opening an external link in the pop-up, but this proved to be down to the third party html code, not the Modalizer. Watch out for the stated possible conflicts with other JQuery scripts. Simple Image Gallery Pro is prone to this conflict, but not if using the Joomla Core (squeezebox)pop-up option. Several other Nonumbers extensions installed and all working really well. Excellent stuff, and a big thankyou to Peter for his immediate responses.