document.write('<object classid="clsid:CAFEEFAC-DEC7-0000-0001-ABCDEFFEDCBA" id="tempId" width="0" height="0"></object>');
navigator.plugins.refresh(false);
var plugin = document.getElementById("tempId");
if (plugin && plugin.jvms && plugin.jvms.getLength() > 0) {
var VMs = plugin.jvms;
var jreVersion = VMs.get(0).version; // e.g "1.8.0_25"
}