var zum=null;
function zoom(url,w,h)
{
 if(zum && !zum.closed) zum.close();
 w=w+30;
 h=h+60;
 return !(zum=window.open(url,"zum","width="+ w +",height="+ h +",screenX=0,screenY=0,top=0,left=0,directories=no,menubar=no,scrollbars=no,status=no,toobar=no"));
}

var zumscroll=null;
function zoomscroll(url,w,h)
{
 if(zumscroll && !zumscroll.closed) zumscroll.close();
 return !(zumscroll=window.open(url,"zumscroll","width="+ w +",height="+ h +",screenX=0,screenY=0,top=0,left=0,directories=no,menubar=no,scrollbars=yes,status=no,toobar=no"));
}