title: window.pixelRatio not working in Opera. Any alternative?
body: <p>I have been working on making our CMS export valid content for mobile devices. One of the problems we encountered was that newer devices, like the iphone4 have a higher resolution display so we needed to find a way to render the same page correctly on older devices and newer that use a 300dpi display. So far we used javascript and window.devicePixelRatio in order to get the dpi resolution, but it turns out this is not working in opera(?) and opera mobile.</p>
  
  <p>Any suggestetions or maybe a defferent approach? I researched a bit but was unable to find somethig.</p>
  
  <p>Thanks</p>