// Maximizar ventana
	function maximiza(){
		window.moveTo(0,0);
		if (document.all) {
			window.resizeTo(screen.availWidth,screen.availHeight);
		}else 
			if (document.layers||document.getElementById) {
				if (window.outerHeight < screen.availHeight || window.outerWidth < screen.availWidth){
					window.outerHeight = screen.availHeight;
					window.outerWidth = screen.availWidth;
			}
		}
	}
// Abrir enlace en ventana origen o en la actual
	function abre_enlace(pag){
		if (window.opener){
			if (!window.opener.closed){
				window.opener.top.location.href = pag;
				self.close();
			}else{
				document.location.href = pag;
				maximiza();
			}
		}else{
			document.location.href = pag;
			maximiza();
		}	
	}