changed the fundimentals, jglOpen now puts in two canvases in a div with class=jgl. The canvases are stacked, one back one front, jglFlush now flips the buffers (canvases), so that one is always hidden and one is not. jglClearScreen was also added and its use is required if you want to clear the front buffer. jglClearScreen also is in charge of setting background color. So far visual and screen coordinates for lines2, points2, stencils, and textures have been tested and do work. Commenting pending