function abrirjanela(pURL,largura,altura,posicaohorizontal,posicaovertical){

	var x = posicaohorizontal

	var y = posicaovertical

	var larg = largura

	var altu = altura

	if ( larg == 99999 ){

		larg = screen.availWidth;

	}

	if (altu == 99999){

		altu = screen.availHeight;

		altu = altu - (altu - ( altu % 30 )) / 30;

	}

	if (x == 99999){

		x = screen.availWidth - larg;

	}

	if (y == 99999){

		y = screen.availHeight - altu;

	}

	janela=window.open(pURL,"formwindow","toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=0,width=" + larg + ",height=" + altu + "left=" + y + ",top=" + x );

	janela.location=pURL;

}