function abreventa(nombre,w,h,tit,scroll,status){
window.open(nombre,tit,'top=0,left=0,toolbar=no,location=no,directories=no,status='+status+',menubar=no,scrollbars='+scroll+',resizable=no,width='+w+',screenX=25,screenY=30,height='+h);
}

function cerrar(){
  window.close();
}

function doResize(ancho,alto){
  if (window.resizeTo){
    window.resizeTo(ancho,alto);
	}
}

function MM_openBrWindow(theURL,winName,features){ //v2.0
  window.open(theURL,winName,features);
}

function trim(str) {
  while (str.charAt(0) == ' ') str = str.substring(1);
  while (str.charAt(str.length - 1) == ' ') str = str.substring(0, str.length - 1);
  return str;
}