function mostrarBanner() {
		$.blockUI.defaults.overlayCSS.backgroundColor = '#555';
    $.blockUI.defaults.overlayCSS.opacity = .50; 
    $.blockUI({
    	message: $('#capa1'),
      centerX: false,
      centerY: true,
      css: { width:'80%', left:'10%', top:'20px', border:'none', backgroundColor:'transparent', color:'#000'}
    });
    
    //temblar();
    //setTimeout(temblar, 3000);
    setTimeout($.unblockUI, 18000);
	}
	
	
	function temblar() {
		setTimeout(function() {
      $('body').effect("shake", { direction:"up",   distance:10, times:1 }, 100);
      $('body').effect("shake", { direction:"left", distance:10, times:1 }, 100);
      }, 500);
	}
	

	function createCookie(name,value,days) {
		if (days) {
			var date = new Date();
			date.setTime(date.getTime()+(days*24*60*60*1000));
			var expires = "; expires="+date.toGMTString();
		}
		else var expires = "";
		document.cookie = name+"="+value+expires+"; path=/";
	}
	
	
	function readCookie(name) {
		var nameEQ = name + "=";
		var ca = document.cookie.split(';');
		for(var i=0;i < ca.length;i++) {
			var c = ca[i];
			while (c.charAt(0)==' ') c = c.substring(1,c.length);
			if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
		}
		return null;
	}
	
	
	function eraseCookie(name) {
		createCookie(name,"",-1);
	}