function PopUp(url, nome, largo, alto, barra, ridimensiona)
{
	IE = navigator.appName=="Microsoft Internet Explorer";
	NS = navigator.appName=="Netscape";
	bVer = parseInt(navigator.appVersion);
	var newWin=null;
	var _params = "width="+largo+",height="+alto+",resizable="+ridimensiona+",status=no";
	_left = ( ((screen.width - 700) / 2) - 20 );
	_top = (20 ) ;
	if (IE) _params += ",top=" + _top + ",left=" + _left;
	else if (NS) _params += ",screenX=" + _left + ",screenY=" + _top;
	newWin = window.open(url, nome, [_params,"scrollbars="+barra]);
	if ( newWin!=null && !(IE && bVer<5) )
			newWin.focus(); // MSIE4 DOESN'T FOCUS WINDOWS
}