How do I rotate around my object

hello to all

i would like to control the rotation of my object with the mouse

here its what i want to achieve

http://mrdoob.com/projects/voxels/#A/Sb

those are the functions i have inside the plugin Q3DMaster

http://postimg.org/image/ydxokcc5x/

i added this but something is wrong on the formula

http://postimg.org/image/6r20xbf1l/

here its the result but with the wrong controls

http://mattepainting.be/test3/index.html

can someone help me to solve the XYZ problem with mouse control?

SOLVED!