function abreJanela(szJanela, szUrl, intWidth, intHeight )
{
	var posx = (screen.width-intWidth)/2;
	var posy = (screen.height-intHeight)/2;

	win = window.open(szUrl,szJanela,'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,menubar=no,width='+intWidth+',height='+intHeight+',screenX='+posx+',screenY='+posy);
	win.moveTo(posx,posy);
	win.focus();
}

function abreJanela2(szJanela, szUrl, intWidth, intHeight )
{
	var posx = (screen.width-intWidth)/2;
	var posy = (screen.height-intHeight)/2;

	win = window.open(szUrl,szJanela,'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,menubar=no,width='+intWidth+',height='+intHeight+',screenX='+posx+',screenY='+posy);
	win.moveTo(posx,posy);
	win.focus();
}