// JavaScript Document

	function abrir_ventana(url, ancho, alto){
		//var ventana;
		//ventana=window.open("","ventana","");
		//ventana.close();
		var myLeft = (screen.width-ancho)/2;
		var myTop = (screen.height-alto)/2;
			ventana=window.open(url,'ventana','width='+ancho+',height='+alto+', scrollbars=YES, resizable=NO, left='+myLeft+', top=',+myTop+', location=no,directories=no,status=no,toolbar=no,menubar=no');
			ventana.resizeTo(ancho,alto+20)
			ventana.focus();

	}
	
	
	function MM_findObj(n, d) { //v3.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); return x;
}