var newWindow; 
var firsttime=0; 

function showMedia(url) 
{ 
        document.newURL.url.value = url; 
        url = '/showmedia/childFrame.html'; 
        if (firsttime==0) { 
                newWindow=window.open (url, "newWindow", "width=650,height=700,menubar=no,scrollbars=yes,toolbar=no,location=no,directories=no,resizable=yes");

                firsttime++; 
        } 
        else{ 
                if (newWindow) {newWindow=window.open (url, "newWindow", "width=650,height=700,menubar=no,scrollbars=yes,toolbar=no,location=no,directories=no,resizable=yes");

                } else { 
                        newWindow.location.href=url; } 
        } 
        if (newWindow) newWindow.focus(); 
}