[1] SVGSVGElement - Web APIs | MDN () <https://developer.mozilla.org/en/docs/Web/API/SVGSVGElement>
[2] suspendRedraw method (Internet Explorer) () <https://msdn.microsoft.com/library/Ff972219>
[3] Re: SVG Tiling and Layering (SVG Map) デモサイト 立ち上げ (Yuzo Matsuzawa著, ) <https://lists.w3.org/Archives/Public/public-svg-ig-jp/2010JulSep/0001.html>