function openWindow(url, width, height)
{
  popupWin = open(url, '', 'width=' + width + ', height=' + height);
	popupWin.moveTo( (screen.width-width)/2, (screen.availHeight-height)/2 );
		
	if( navigator.appName == "Netscape" )
	{
  	popupWin.resizeTo(width+7, height+49);
	}	
  
	popupWin.focus();
}