function popUp(URL) {
	var altoPopUp = 400;
	var anchoPopUp = 400;
	var anchoScreen = getWidthScreen();
	var margenIzquierdo = (anchoScreen - anchoPopUp) / 2;
	var altoScreen = getHeightScreen();
	var margenTop = (altoScreen - altoPopUp) / 2;
	var day = new Date();
	var id = day.getTime();
	URL += "&idx=" + numeross();
	eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0, scrollbars=yes, location=0, statusbar=0, menubar=0, resizable=0, width=" + anchoPopUp + ", height=" + altoPopUp + ", left=" + margenIzquierdo +", top=" + margenTop + "');");
}

function popUpParam(URL, ancho, alto, scroll) {
	var altoPopUp = alto;
	var anchoPopUp = ancho;
	var anchoScreen = getWidthScreen();
	var margenIzquierdo = (anchoScreen - anchoPopUp) / 2;
	var altoScreen = getHeightScreen();
	var margenTop = (altoScreen - altoPopUp) / 2;
	var day = new Date();
	var id = day.getTime();
	URL += "&idx=" + numeross();
	eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0, scrollbars=" + scroll + ", location=0, statusbar=0, menubar=0, resizable=0, width=" + anchoPopUp + ", height=" + altoPopUp + ", left=" + margenIzquierdo +", top=" + margenTop + "');");
}