var win1

function newWin(url,w,h) {
if (win1 && win1.open || win1 && !win1.closed){win1.close()}
win1 = window.open(url,"win1","width="+w+",height="+h+",toolbar=no,location=no,menubar=no,status=no,scrollbars=no,resizable=yes")
}