function FechaFundo(){
	document.getElementById('exibe').style.visibility = 'hidden';	
}


/*function Exibe(){
	
	var tamy = document.documentElement.clientHeight;
	if (window.opera){ tamy = document.body.clientHeight; } 
	var tamx = document.documentElement.clientWidth;
	
	var topo = document.documentElement.scrollTop;
	
	document.getElementById('exibe').style.left = (tamx - 300)/2 +'px';
	document.getElementById('exibe').style.top = ((tamy - 2)/2)+topo +'px';
	
	document.getElementById('exibe').style.visibility = 'visible';
	
	window.onscroll = function(){
		Rolar();	
	}

}

function Rolar(){

	var tamy = document.documentElement.clientHeight;
	if (window.opera){ tamy = document.body.clientHeight; } 
	var topo = document.documentElement.scrollTop;
	
	document.getElementById('exibe').style.top = ((tamy - 300)/2)+topo +'px';
}
*/