function openWin( pageToLoad, winName, width, height, center) 
{
 xposition=0; yposition=0;
 if ((parseInt(navigator.appVersion) >= 4 ) && (center))
{
 xposition = (screen.width - width) / 2;
 yposition = (screen.height - height) / 2;
}
 args = "width=" + width + "," + "height=" + height + "," + "location=0," 
 + "menubar=0," + "resizable=0," + "scrollbars=0," + "status=0," 
 + "titlebar=0," + "toolbar=0," + "hotkeys=0,"
 + "screenx=" + xposition + "," + "screeny=" + yposition + ","
 + "left=" + xposition + "," + "top=" + yposition; 
 window.open(pageToLoad,winName,args);
}