+ filter = document.createElementNS svg_ns, 'filter'
+ filter.setAttribute 'id', 'crayon'
+ filter.setAttribute 'filterUnits', 'userSpaceOnUse'
+ filter.setAttribute 'x', '-5%'
+ filter.setAttribute 'y', '-5%'
+ filter.setAttribute 'height', '110%'
+ filter.setAttribute 'width', '110%'
+ filter_inner = document.createElementNS svg_ns, 'feTurbulence'
+ filter_inner.setAttribute 'baseFrequency', '.3'
+ filter_inner.setAttribute 'numOctaves', '2'
+ filter_inner.setAttribute 'type', 'fractalNoise'
+ filter.appendChild filter_inner
+ filter_inner = document.createElementNS svg_ns, 'feDisplacementMap'
+ filter_inner.setAttribute 'scale', '6'
+ filter_inner.setAttribute 'xChannelSelector', 'R'
+ filter_inner.setAttribute 'in', 'SourceGraphic'
+ filter.appendChild filter_inner
+ svg.appendChild filter