我想把下面的這段代碼改成只允許瀏覽器運(yùn)行HTML5，不允許使用Flash，請(qǐng)問應(yīng)該怎么改？<script>    var viewer = createPanoViewer({swf:"tour.swf", id:"krpanoSWFObject", target:"krpanoDIV", html5:"auto",passQueryParameters:true});    //viewer.useHTML5("whenpossible");        // incomment to use the HTML5 krpanoJS viewer always when possible (Safari5)        if( viewer.isDevice("iPhone|iPod|Android"))    {        //viewer.passQueryParameters("html5","prefer");        viewer.useHTML5("auto");        viewer.addVariable("xml", "tour.xml");    }    else    {        //viewer.useHTML5("prefer+webgl+css3d");        viewer.useHTML5("auto");        viewer.addVariable("xml", "tour.xml");    }    viewer.addParam("wmode", "transparent");    viewer.embed();</script>