Hack flapmmo.com to set server and use the mouse to move.

gistfile1.js

/**
 * @author github user pwfff
 * cleanup by github user sartaj
*/ 

// Go To flapmmo.com
// Open Web Inspector
// Go to sources tab
// On the side bar, find main.js
// Pretty Print main.js (in Chrome, its the curly bracket symbol on the bottom)
// Add breakpoint on line 142 by literally clicking where the line number is listed
// Go to the console tab.
 
// You can have a friend tell you their server and then use this to be on same sever as them.
// To set the server to something you want, run this. 
r = 'ws://198.58.104.108:2829';
 
 
// To override the gravity and use your mouse to navigate, copy and paste this code
document.onmousemove = function(event) { c.y = event.clientY; }
setInterval(function(){
	c.vy = 0;
},10);