function openWindow(page,height,width,scrollBars)
{
  //newWindow = window.open( filepath, "_blank","toolbar=no,nomenubar=no,scrollbars=" + (scrolls == true ? "yes" : "no") + ",resizable=no,status=no,height="+height+",width="+width);

     	// default window size
	if( !height )
		height = 600;
	if( !width )
		width = 800;

	// pop-up position:   screenX-screenY->Netscape  /   left-top->Explorer
	var x = (screen.width-width)/2;
	var y = (screen.height-height)/2;

	var position = (document.layers)? ',screenX='+x+',screenY='+y: ',left='+x+',top='+y;
	newWindow = window.open( page, "_blank","toolbar=no,nomenubar=no,scrollbars=" + (scrollBars == true ? "yes" : "no") + ",resizable=yes,status=no,height="+height+",width="+width+position);
	if( newWindow )
	{
		newWindow.focus();
	}
}