@ Geez: yeah I wrote it myself. this is just some javascript + php + css. it's not perfect and some parts are rather dirty. you can extract the javascript/css parts from the website. php is just used to generate the userlist array.
@ Apache uwu: no I can't / don't know how to do it without making everything else unclickable but I don't think that this is necessary. just enter another letter or remove the @ and the popup disappears.
I don't want to have so many buttons there.. hmmm... maybe a button AFTER clicking quote on the answer page to switch between full quote and @
(p.s.: img converts to bigimg when the website failes to open the image to check it's size or if the img is just too big to be embedded as normal img.)
@ Xanamaros: I'm sending this message with Google Chrome (14.0.835.202 m). it works here! (attention: javaSCRIPT has to be enabled. not java. there's a huge difference)