// function openwindow()
function openwindow(url, ancho, alto, scrollBar)	{
	//alert("opening Window");
	propiedades = "toolbar=0, location=0, directories=0, status=0, menubar=0, scrollbars=" + scrollBar + ", resizable=0, width=" + ancho + ", height=" + alto + ", left=100, top=100";
	mywin = window.open(url, "win", propiedades);
	mywin.self.focus();
}