function TamVentana() {
	  var Tamanyo = [0, 0];
	  if (typeof window.innerWidth != 'undefined'){
		Tamanyo = [
			window.innerWidth,
			window.innerHeight
		];
	  }
	  else if (typeof document.documentElement != 'undefined'
		  && typeof document.documentElement.clientWidth !=
		  'undefined' && document.documentElement.clientWidth != 0)
	  {
	 Tamanyo = [
			document.documentElement.clientWidth,
			document.documentElement.clientHeight
		];
	  }
	  else   {
		Tamanyo = [
			document.getElementsByTagName('body')[0].clientWidth,
			document.getElementsByTagName('body')[0].clientHeight
		];
	  }
	  return Tamanyo;
}