Window.open only if the window is not open

Question

I have a link on my site that opens a new window to a page that plays a very long audio file. My current script works fine to open the page and not refresh if the link is cl

Answer 1

Thanks to Stan and http://ektaraval.blogspot.ca/2011/05/how-to-set-focus-to-child-window.html

My solution creates a breakout pop-up mp3 player that remains active site wide and only refreshes if the window is not open prior to clicking the link button

function OpenWindow(){
    var targetWin = window.open('','winPop', 'sample-options');
    if(targetWin.location == 'about:blank'){
        //create new
        targetWin.location.href = 'http://site/megaplayer';
        targetWin.focus();
    } else {
        //give it focus (in case it got burried)
        targetWin.focus();
    } 
}