// centertop of the popup window is in dead center
function popUpCC(winpage, winname, w, h, scroll, resize) {
var winl = (screen.width - w) / 2;
var wint = (screen.height - h) / 2;
winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable='+resize
win = window.open(winpage, winname, winprops)
if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}


// centertop of the popup window is in center and slightly left
function popUpCL(winpage, winname, w, h, scroll, resize) {
var winl = (screen.width - w) / 3;
var wint = (screen.height - h) / 2;
winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable='+resize
win = window.open(winpage, winname, winprops)
if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}


// *** visually this is the best setting
// centertop of the popup window is in center and slightly up
function popUpUC(winpage, winname, w, h, scroll, resize) {
var winl = (screen.width - w) / 2;
var wint = (screen.height - h) / 3;
winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable='+resize
win = window.open(winpage, winname, winprops)
if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}


// centertop of the popup window is slightly left and up
function popUpUL(winpage, winname, w, h, scroll, resize) {
var winl = (screen.width - w) / 3;
var wint = (screen.height - h) / 3;
winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable='+resize
win = window.open(winpage, winname, winprops)
if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}