Hello, I saw in the KaToolTip.js file something that looks like a bug : In the function "setTipImage" at line 145/146 offsetX = (offsetX)?offsetX:0; offsetY = (offsetX)?offsetY:0; Maybe you want to write : offsetX = (offsetX)?offsetX:0; offsetY = (offsetY)?offsetY:0; Don't know if I'm wrong but I tell you this Thanks Stephane