/* function launchPopupWindow
 */
function launchPopupWindow(winName,winUrl,winWidth,winHeight,winOptions)
{
    var winl = (screen.width-winWidth)/2;
    var wint = (screen.height-winHeight)/2;
    if (winl < 0) winl = 0;
    if (wint < 0) wint = 0;
    var windowProps = "height="+winHeight+",width="+winWidth+",top="+ wint +",left="+ winl +"," + winOptions;
    var mywindow=window.open(winUrl,winName,windowProps);
    if (mywindow.opener == null) mywindow.opener = self;
    mywindow.focus();
}