function mostrarCapaProgreso(){
    		window.scrollTo(0,0);
    		document.getElementById('progreso').style.visibility='visible';
    		if(document.body.clientHeight<800){
    			document.getElementById('progreso').style.height="800px";
    		}else{
    			document.getElementById('progreso').style.height=document.body.clientHeight+"px";
    		}
    	}

function rtclk(e) {
			if (document.all && !document.getElementById) {
				if (event.button == 2) return false;
			} else if (
				document.layers
			) {if (e.which == 2 || e.which == 3) {
				return false;
			}
		}} if (document.layers) document.captureEvents(Event.MOUSEDOWN);document.onmousedown = rtclk;document.oncontextmenu = function() 
		{return false;}