function emerge(url,nombre,ancho,alto,scroll){

newWin=window.open(url,nombre,"resize=0,toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars="+scroll+",resizable=0,width="+ancho+",height="+alto+",top=0,left=0");

   return;

newWin.focus();

}