function abreWinXY(pagina, X, Y, ancho, alto) 
{
	window.open(pagina,
		"_blank",
		"scrollbars=yes, status=0, location=no, resizable=yes, titlebar=no, toolbar=no, height="+alto+", width="+ancho+", ScreenX="+X+",ScreenY="+Y+",top="+Y+",left="+X);
}

function abreWin(pagina, scroll, redimensionar, ancho, alto) 
{
	var ejeX = (screen.width-ancho)/2;
	var ejeY = (screen.height-alto)/2;
	
	window.open(pagina,
		"_blank",
		"scrollbars="+scroll+", status=0, location=no, resizable="+redimensionar+", titlebar=no, toolbar=no, height="+alto+", width="+ancho+", ScreenX="+ejeX+",ScreenY="+ejeY+",top="+ejeY+",left="+ejeX);
}

function borrarOpcionesSelect(objSel, iComienzo)
{
	var total = objSel.length;
	// Dejar la primera opcion q siempre sera la misma
	for (var i=iComienzo; i<total;i++)
	{
		objSel.options[1] = null;
	}
}