[JS] Determine connection type

[JS] Determine connection type

/**
	navigator.connection is supported on: android 2.2+, Chrome 30+
*/
 
var connection = navigator.connection || {'type':'0'}, // create a custom object if navigator.connection isn't available 
	connectionSpeed;
 
// determine connection speed 
switch(connection.type) { 
	case connection.CELL_3G: // 3G 
		connectionSpeed = 'fast'; 
	break; 
	case connection.CELL_2G: // 2G 
		connectionSpeed = 'slow'; 
	break; 
	default: // WIFI, ETHERNET, UNKNOWN 
		connectionSpeed = 'fast'; 
};