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var leftPos = (typeof window.screenLeft == "number") ?
               window.screenLeft : window.screenX;
              
var topPos = (typeof window.screenTop == "number") ?
               window.screenTop : window.screenY;

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// plugin detection - doesn't work in IE

function hasPlugin(name) {
  name = name.toLowerCase();

  for (var i=0 ; i < navigator.plugins.length ; i +=1) {
    if(navigator.plugins[i].name.toLowerCase().indexOf(name) > -1) {
      return true;
    }
  }

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function nodeListToArray(nodes) {
  var array = null;
  try {
    array = Array.prototype.slice.call(nodes, 0); //non-IE and IE9+
  } catch (ex) {
    array = new Array();
    for(var i=0, len=nodes.length; i < len; i+=1) {
      array.push(nodes[i]);
    }
  }

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//Code to prevent multiple form submissions
EventUtil.addHandler(form, "submit", function(event) {
  event = EventUtil.getEvent(event);
  var target = EventUtil.getTarget(event);
  
  //get the submit button
  var btn = target.elements["submit-btn"];
  
  //disable it
  btn.disabled = true;

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var EventUtil = {

    addHandler: function(element, type, handler){
        if (element.addEventListener){
            element.addEventListener(type, handler, false);
        } else if (element.attachEvent){
            element.attachEvent("on" + type, handler);
        } else {
            element["on" + type] = handler;
        }

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{
    "path":"/usr/local/bin/",
    "cmd": ["node", "$file", "$file_base_name"],
    "working_dir": "${project_path:${folder}}",
    "selector": "*.js"
}

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'use strict';

module.exports = function(grunt) {

    grunt.initConfig({
        pkg: grunt.file.readJSON('package.json'),
        
        connect: {
            livereload: {
                options: {

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# RSpec 2.0 syntax Cheet Sheet by http://ApproachE.com

# defining spec within a module will automatically pick Player::MovieList as a 'subject' (see below)
module Player
	describe MovieList, "with optional description" do
		  
	  it "is pending example, so that you can write ones quickly"
	  
	  it "is already working example that we want to suspend from failing temporarily" do
		pending("working on another feature that temporarily breaks this one")

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class BoggleBoard
  attr_reader :board 
  
  def initialize(board)
    @board = board  
  end
  
  def print_board
    @board.each { |row| p row}
  end

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How ems work

A simple example of how ems are relative measurement units.

A Pen by José Menor on CodePen.

License.