var win = null
function newWindow(mypage,myname,w,h,features){
var winl = (screen.width-w)/1.35
var wint = (screen.height-h)/2
if (winl< 0) winl = 0
if (wint < 0) wint = 0
var settings = 'height='+h+','
settings += "width="+w+","
settings += "top ="+wint+","
settings += "left="+winl+","
settings += features
win = window.open(mypage,myname,settings)
}