var ventana = null;
function mostrar (url){
	ventana = window.open(url, 'nuevo', 'top=0, left=100, width=540, height=475, toolbars=no, menubar=no, location=no, directories=no, status=no, scrollbars=yes, resizable=no');
}

function MM_goToURL(){ //v3.0
	var i
	args = MM_goToURL.arguments;
	document.MM_returnValue = false;
	for (i=0; i<(args.length-1); i+=2)
		eval(args[i]+".location='"+args[i+1]+"'");
}