// JavaScript Document
	function cambiaTamanho(){
		var tamanho = calculaTamanho();
		var izquierdo = document.getElementById('banner_lateral_izquierdo');
		var derecho = document.getElementById('banner_lateral_derecho');
		
		if(tamanho[0] < 1275){
			izquierdo.style.display = 'none';	
		}else{
			izquierdo.style.display = 'inline';	
		}
		if(tamanho[0] < 1275){
			derecho.style.display = 'none';	
		}else{
			derecho.style.display = 'inline';	
		}
		return true;
	}
	function calculaTamanho(){
		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;	
	}