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function getViewport() { if(document.compatMode == “BackCompat”){ return { width:document.body.clientWidth, height:document.body.clientHeight }; }else { return { width:document.documentElement.clientWidth, height:document.documentElement.clientHeight }; } }function getViewport() { if(document.compatMode == “BackCompat”){ return { width:document.body.clientWidth, height:document.body.clientHeight }; }else { return { width:document.documentElement.clientWidth, height:document.documentElement.clientHeight }; } }function getViewport() { if(document.compatMode == “BackCompat”){ return { width:document.body.clientWidth, height:document.body.clientHeight }; }else { return { width:document.documentElement.clientWidth, height:document.documentElement.clientHeight }; } }