added isSupported to detect old browsers
added isSupported to detect old browsers

fauvel/CM,fvovan/CM,tomaszdurka/CM,fauvel/CM,tomaszdurka/CM,christopheschwyzer/CM,mariansollmann/CM,tomaszdurka/CM,njam/CM,vogdb/cm,fauvel/CM,cargomedia/CM,alexispeter/CM,alexispeter/CM,alexispeter/CM,christopheschwyzer/CM,tomaszdurka/CM,vogdb/cm,mariansollmann/CM,alexispeter/CM,fvovan/CM,cargomedia/CM,cargomedia/CM,christopheschwyzer/CM,mariansollmann/CM,fauvel/CM,njam/CM,vogdb/cm,christopheschwyzer/CM,zazabe/cm,njam/CM,fvovan/CM,zazabe/cm,vogdb/cm,vogdb/cm,tomaszdurka/CM,cargomedia/CM,njam/CM,fvovan/CM,zazabe/cm,fauvel/CM,njam/CM,mariansollmann/CM,zazabe/cm