function ShowPopup(PopupSource,PopupWidth,PopupHeight) { 

    var WinAppearence = 'menubar=no,location=no,scrollbars=no,status=yes,titlebar=yes,toolbar=no,resizable =no,width='+(PopupWidth)+',height='+(PopupHeight)+',top=30'+',left=100';        
    NewWindow=window.open(PopupSource,'popup',WinAppearence);
    NewWindow.focus();
    return NewWindow;    
}