function popup( url, height, width )
{

	var winl = (screen.width - width ) / 2;
	var wint = (screen.height - height ) / 2;

	window.open( url, 'POPUP', "top="+wint+", left="+winl+", height="+ height +", width="+width+", menubar=no, resizable=no, scroolbars=no, status=no, toolbar=no" );
}

function refreshParent() 
{
	window.opener.location.reload( false );
	window.close();
}