function abreJanelaPadrao(URL, nome, largura, altura)
{
	var win = window.open(URL, nome, "scrollbars=0,status=0,width=" + largura + ",height=" + altura + ",resizable=0");
	return win;
}

function abreJanelaCentro(URL, nome, largura, altura, yOffSet, scroll)
{
	var posX = parseInt((screen.width - largura)/2);
	
	var win = window.open(URL, nome, "scrollbars=0,status=0,width=" + largura + ",height=" + altura + ",left= " + posX  + ",top=" + yOffSet + ",scrollbars=" + scroll + ",resizable=0,");
	return win;
}

function abreJanelaScroll(URL, nome, largura, altura)
{
	var win = window.open(URL, nome, "scrollbars=1,status=0,width=" + largura + ",height=" + altura + ",resizable=0");
	return win;
}
	
function posicionaJanela(posX, posY)
{
	window.moveTo(posX, posY);
} 

function fechar()
{
	if(typeof(window.opener) == "object")
	{
		window.opener.focus();
	}
			
	window.close();
}

function resetTxtField(field, msg)
{
	field.value = "";
	field.focus();
	alert(msg);
	return false;
}