Check_MK Werk 3763: Fixed playing sounds in views when using current Firefox

ID: 3763 Title: Fixed playing sounds in views when using current Firefox Component: Multisite Level: 1 Class: Bug Fix Version: 1.4.0i1 Changed the way the sounds are played in HTML code from "object" tag to HTML5 "audio" tag. This should work in most modern browsers. Also did some refactoring along the way.