gistfile1.js

javascript: (function() {
	
	var url = 'http://journeyplanner.tfl.gov.uk/user/XSLT_TRIP_REQUEST2';
	var default_location = "MY_DEFAULT_LOCATION";
	
	var input = '%s';
	
	var matches = input.match(/(^\s*(.*)\s*>\s*(.*)\s*$|^\s*(.*)\s*<\s*(.*)\s*$)/);
	if( ! matches) {
		window.location = url;
		return;
	}
	
	var names = matches[2] != undefined ? [matches[2], matches[3]] : [matches[5], matches[4]];
	
	var data = {
		'place_origin': 'London',
		'place_destination': 'London',
		'language': 'en',
		'execInst': '',
		'sessionID': '0',
		'ptOptionsActive': '-1'
	};
	
	['origin', 'destination'].forEach(function(pos, index) {
		data['name_'+pos] = (names[index] = names[index] || default_location);
		data['type_'+pos] = /[0-9]/.test(names[index]) ? 'locator' : 'stop';
	});
	
	var key, input, form = document.createElement('form');
	
	form.method = 'post';
	form.action = url;
	
	for(key in data) {
		input = document.createElement('input');
		input.name = key;
		input.value = data[key];
		input.type = 'hidden';
		form.appendChild(input);
	}
	
	document.body.appendChild(form);
	form.submit();
})();