This is a module in a Joomla website and the echo is shown in de position where the module is running in.
I do know the "inspect element" screen if you right click on a website, but I don't know all the functionality, I did use firefox because it has a nice debug tool, but firefox doesn't work anymore on my PC.
I usualy check my work in the browsers I installed (Chrome "standard", IE, Opera, Safari, Firefox (not anymore)).
Did a new install of FF but still crashes, I have to admit that I didn't google for a solution yet on the FF problem but that's off-topic here :-)
Strange thing is