function newWindow(url,sw,sh) {
    var v=parseInt(navigator.appVersion);
    isNetscape=navigator.appName.indexOf('Netscape')>=0;
    isExplorer=navigator.appName.indexOf('Explorer')>=0;
    positionCode='';

             w  = screen.availWidth/2-sw/2;
             h  = screen.availHeight/2-sh/2;

     if(isExplorer) {
            positionCode=',left='+w+',top='+h;

        }
     if(isNetscape) {
            positionCode=',screenX='+w+',screenY='+h;
        }
           positionCode+=',scrollbars=yes, resizable=yes'

       newWin=window.open('','a','width='+sw+',height='+sh+','+positionCode);
       newWin.document.location=url;
       newWin.focus();

}
function newWindowScroll(url,sw,sh) {
    var v=parseInt(navigator.appVersion);
    isNetscape=navigator.appName.indexOf('Netscape')>=0;
    isExplorer=navigator.appName.indexOf('Explorer')>=0;
    positionCode='';

             w  = screen.availWidth/2-sw/2;
             h  = screen.availHeight/2-sh/2;

     if(isExplorer) {
            positionCode=',left='+w+',top='+h;

        }
     if(isNetscape) {
            positionCode=',screenX='+w+',screenY='+h;
        }
           positionCode+=',scrollbars=yes, resizable=yes'

       newWin=window.open('','a','width='+sw+',height='+sh+','+positionCode);
       newWin.document.location=url;
       newWin.focus();

}