WebGL Redirect

Hi, If player's browser don't support WebGL, I want to redirect Web Player version. I think it's possible in UnityLoader.js file but how?

 function CompatibilityCheck(){hasWebGL?mobile?confirm("Please note that Unity WebGL is not currently supported on mobiles. Press Ok if you wish to continue anyway.")||window.history.back():-1==browser.indexOf("Firefox")&&-1==browser.indexOf("Chrome")&&-1==browser.indexOf("Safari")&&(confirm("Please note that your browser is not currently supported for this Unity WebGL content. Try installing Firefox, or press Ok if you wish to continue anyway.")||window.history.back()):(alert("You need a browser which supports WebGL to run this content. Try installing Firefox."),window.history.back())}

I just want to add a URL redirect here.