function mostrar(nom){
		if(document.getElementById(nom).style.display=='block')
			document.getElementById(nom).style.display='none';
		else
			document.getElementById(nom).style.display='block';
}

function imgpopup (cual, ruta) {
	var ancho=((screen.width)/2)-245;	
	var alto=((screen.height-16)/2)-(400/2);	
	ventana=window.open('imagen.php?ruta='+ruta+'&img='+cual,'imagen','resizable=1,toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=no,width=1,height=1,screenX='+((screen.width)/2)+',screenY='+((screen.height)/2)+',left='+((screen.width)/2)+',top='+((screen.height)/2)+'');
}